Question 1 : She_____the letter a few moments before my call came through. A. has just opened B. had just opened C. just opened D. just opens Question 2 : As soon as the boys_____the hall they_____to speak about books and writers. A. entered/begun B. were entering/began C. entered/began D. had entered/beganQuestion 3 : While we_____dinner at a restaurant someone came to the house and _____this note. A. had had/ left B. were having/left C. had/left D. were having/had left Question 4 : By the end of this year we_____a new house. A. will buy B. will be buying C. will have bought D. had bought Question 5 : “You always_____mistakes, you need_____the instructions more carefully.” A. make/read B. are always making/read C. make/to read D. are always making/to read Question 6 : Those students who_____the exam are going to take another one held in August. A. have failed B. failed C. had failed D. were failing Question 7 : I_____your brother this afternoon at Green Street. A. met B. had met C. was meeting D. have met Question 8 : She said she met you once at the Hilton last year._____since then? A. Have you met her B. Did you meet her C. Were you met her D. Had you met her Question 9 : Mr. Edwards_____history for 35 years, and is retiring soon. A. teaches B. is teaching C. taught D. has been teaching Question 10 : I’m tired. I_____the house since 9 this morning. A. am cleaning B. was cleaning C. had been cleaning D. have been cleaning Question 11 : I can’t believe that you_____all the three exercises. You just started five minutes ago. A. have finished B. have been finishing C. finished D. are finishing Question 12 : “How’s Peter doing?” “I don’t know. I_____from him for months.” A. have to hear B. haven’t heard C. didn’t hear D. don’t hear Question 13 : Their children_____lots of new friends since they_____to that town. A. have made - moved B. were making - have moved C. made - are moving D. made - have been moving Question 14 : He_____a cigarette and_____to the window. A. lighted/walked B. lit/was walking C. was lighted/was walking D. lit/had walked Question 15 : "You_____here before?" "Yes, I_____my holidays here last year. A. Were/spent B. Have you been/spent C. Were/had spent D. Have you been/have spent Question 16 : "You have just missed the last train." "Never mind, I_____."A. will walk B. was walking C. am walking D. am going to walk Question 17 : I_____my sister in April as planned. A. have seen B. will see C. am going to see D. see Question 18 : Then about a year ago, he_____and I_____from him since. A. has disappeared/haven’t never heard B. has disappeared/never heard C. disappeared/ have never heard D. was disappeared/had never heard Question 19 : After the guests_____she went back into the living-room and _____off the light. A. left/switched B. had left/switched C. had left/had switched D. had left/was switching Question 20 : When Alice gets here, you_____her to her room? A. will you show B. did you show C. have you shown D. are you showing Question 21 : As Hugh and I_____down the steps we nearly_____into my father. A. came/ran B. were coming/ran C. had come/ran D. came/were running Question 22 : If you want to see us, come to Tom's on Sunday. We_____for you there at midday. A. will wait B. will be waiting C. will have waited D. will have been waiting Question 23 : Come in, please. I_____for you long. A. have waited B. had waited C. have been waiting D. waited Question 24 : For a moment after their son_____the room, Mr and Mrs Smith merely_____and_____at each other. A. had left/had stood/looked B. had left/stood/looked C. left/stood/looked D. had left/had stood/had looked Question 25 : When we_____in London tonight, it_____. A. arrived/was probably raining B. arrive/ will be probably raining C. arrived/had been probably raining D. arrive/ will have probably rained Question 26 : I'm afraid I must ask you both what_____yesterday at 10:20 p.m. A. did you do B. had you done C. you were doing D. were you doing Question 27 : There_____great changes in our village in the past few years. A. have been B. had been C. was D. has been Question 28 : The noise from the trains_____me terribly last night. A. was annoyed B. annoyed C. has annoyed D. had annoyed Question 29 : Listen to this! I think this news_____you. A. surprises B. will surprise C. surprised D. would surprise Question 30 : By the end of this month, I hope I_____200 pages of my new novel.A. had written B. will have written C. will have been writing D. have written giúp với ạ

Cho tam giác nhọn ABC, AD vuông góc BC. Lấy M và N sao cho AB là trung trực của DM, AC là trung trực của DN. Đoạn thẳng MN cắt AB , AC lần lượt tại I và K. Chứng minh : a) tam giácAMN cân; tam giác BAM vuông b) DA là phân giác góc IDK c) BK vuông góc AC , CI vuông góc AB. d) Trực tâm của tam giác ABC cũng là giao điểm 3 đường phân giác của tam giác DIK.

Trình bày chi tiết 2 bài này cho mình với.

Đọc ngữ liệu sau, và thực hiện các nhiệm vụ bên dưới Câu chuyện về hai hạt lúa Có hai hạt lúa nọ được giữ lại để làm hạt giống cho vụ sau vì cả hai đều là những hạt lúa tốt, đều to khỏe và chắc mẩy,... Một hôm, người chủ định đem chúng gieo trên cánh đồng gần đó. Hạt thứ nhất nhủ thầm: “Dại gì ta phải theo ông chủ ra đồng. Ta không muốn cả thân mình phải nát tan trong đất. Tốt nhất ta hãy giữ lại tất cả chất dinh dưỡng trong lớp vỏ này và tìm một nơi lý tưởng để trú ngụ.” Thế là nó chọn một góc khuất trong kho lúa để lăn vào đó. Còn hạt lúa thứ hai thì ngày đêm mong được ông chủ mang gieo xuống đất. Nó thật sự sung sướng khi được bắt đầu một cuộc đời mới. Thời gian trôi qua, hạt lúa thứ nhất bị héo khô nơi góc nhà bởi vì nó chẳng nhận được nước và ánh sáng. Lúc này chất dinh dưỡng chẳng giúp ích được gì - nó chết dần chết mòn. Trong khi đó, hạt lúa thứ hai dù nát tan trong đất nhưng từ thân nó lại mọc lên cây lúa vàng óng, trĩu hạt. Nó lại mang đến cho đời những hạt lúa mới... Câu 1. Theo ngữ liệu trên, sau khi được người chủ giữ lại để làm giống cho vụ sau, hai hạt lúa đã làm gì? (1 điểm) Câu 2. Theo bạn, việc làm của mỗi hạt lúa ẩn dụ cho điều gì? Tại sao bạn lại cho rằng như vậy? Nếu bạn là một trong hai hạt lúa đó, bạn sẽ chọn cách làm như thế nào? Tại sao? (2 điểm)

Cột nước h1=20cm hình trụ có S khi đông đặc thành nước đá thì h2=? Đưa ra nhận xét .

Cho góc G1=60°, góc H1=120°. Chứng minh a//b

Giải thích Đơn giản Nhất có thể cho em câu này Đi ạ?

Vít calli" Mệt" Nl: đang ngồi full lại tranh vì hôm qua tô ko giống bản gốc, nay lại phải full lại mợt gkia í🤧👻

Hãy viết đoạn văn cảm nhận về bài thơ "Đồng chí"

help!!!!!!!!!!!! Question 24 : By the end of next year, Geoge_____English for 2 years. A. will have learned B. will learn C. has learned D. would learnQuestion 25 : When will you send the message? - We_____it by Friday. A. will deliver B. am going to deliver C. will be delivering D. will have delivered Question 26 : Can we start the party at 3 o'clock? - I don't think so. All our guests _____by then. I'm afraid. A. won't have arrivedB. don't arrive C. haven't arrived D. didn't arrive Question 27 : - What does a blonde say when she sees a banana skin lying just a few metres in front of her? - Oh dear! I_____. A. to slip B. will slip C. am sliping D. am going to slip Question 28 : Here is the weather forecast. Tomorrow_____dry and sunny. A. is going to be B. will be C. is D. would be Question 29 : Can I have a look at your photos tomorrow? - No, I'm sorry. I_____ them by tomorrow. A. will not develop B. shall not develop C. will not have developed D. am developing Question 30 : I know by the time they come to my house this evening, I_____out for a walk. A. will have gone B. will go C. will be going D. shall go Question 31 : These machines_____very well by the time you come back next month. A. will be working B. are going to work C. will have worked D. are working Question 32 : I hope they_____building the road by the time we come back next summer. A. are finishing B. will be working C. are going to work D. will have finished Question 33 : By 2020, the number of schools in our country_____. A. will double B. will have doubled C. are doubling D. shall double Question 34 : They_____the classroom by the end of the hour. A. are going to leave B. will be leaving C. will have left D. are leaving Question 35 : They_____pingpong when their father comes back home. A. will play B. will be playing C. play D. would play Question 36 : I’m going on holiday on Saturday.This time next week I_____on a beach in the sea. A. will lie B. am lying C. will be lying D. should be lying Question 37 : At 8 o’clock this evening my friends and I_____a famous film at the cinema. A. were watching B. will be watching C. have been watching D. watched Question 38 : They_____their presentation at this time tomorrow morning.A. are making B. are going to make C. will be making D. will make Question 39 : When they_____tomorrow, we_____in the sea. A. come - swim B. are coming - swim C. are coming - are swimming D. come - will be swimming Question 40 : She_____from the excursion by 6 o'clock. A. will have returned B. is going to return C. is returning D. will be returning Question 41 : We_____working for ten days when they pay our wages tomorrow. A. were going to be B. are going to C. will be D. will have been Question 42 : By the end of next month, I_____the project to the committee. A. will have presented B. will present C. will be presenting D. will have been presenting Question 43 : She_____the movie before you bring the DVD. A. is seeing B. will be seeing C. is going to see D. will have seen Question 44 : When you look through the small window, you_____that the safe is in its usual place. A. would discover B. discovered C. will be discovering D. will discover Question 45 : Tell him I_____anything with him until I have spoken with my wife. A. won’t discuss B. haven’t discussed C. don’t discuss D. didn’t discuss Question 46 : When I finish this course, I_____to the next level. A. have gone B. will go C. went D. would go Question 47 : She is really worried that she_____to the exam because she doesn’t have her identity card on her. A. haven’t admitted B. is not admittting C. hadn’t been admitted D. won’t be admitted Question 48 : My mom_____for two days by the time I see her. A. will have been travelling B. has been travelling C. will has been travelling D. has been travelled Question 49 : That cat_____you if you pull its tail. A. scratches B. has scratched C. will scratch D. is going to scratch Question 50 : I_____Alex your letter when I see her tomorrow. A. will send B. am going to send C. are sending D. shall send Question 51 : - What are your plans for the holiday? - I_____my grandparents and then go trekking in Sapa. A. am going to visit B. shall go C. will go to visit D. will go