giúp minh với, có giải thích nha 1. Last night, I ______ online with my team. A. worked B. was working C. had worked 2. Tonight at 7:30, Mai ______ with her boyfriend. A. is eating out B. will eat out C. will be eating out 3. What ______ at this time tomorrow? A. are you doing B. will you be doing C. do you do 4. Remember that at 9 a.m. tomorrow, we ______ with our colleagues in Australia. A. will have a video conference B. had a video conference C. will be having a video conference 5. When I came there, she ______ with her friend on Snapchat. A. was chat B. chatted C. was chatting 6. ______ telephathy before? A. Did you use B. Have you ever used C. Will you use 7. When you arrive there tomorrow, I'm sure that they _______ video chatting. A. will be having B. will have C. are going to have 8. His smart phone _______ 2 minutes ago. A. were stolen B. will be stealing C. was stolen 9. I ______ him by mobile phone for 2 weeks. A. haven't been contacted B. haven't contacted C. didn't contact 10. At this time next year, she ______ in a media company. A. will be working B. will work C. is going to work 11. I think we ………….. video conferences with 3D images in 2030. A. used B. will be using C. don't use 12. I strongly ……………… that there will be huge changes in the way we communicate. A. believe B. look C. want 13. Telepathy ………………words in 30 years. A. replaced B. will be replacing C. had replaced 14. We ………………any longer in 2112. A. won't be working F2F B. don't work F2F C. aren't worked F2F 15. Some smart devices which can help us understand our pets ………………recently. A. has been introduced B. have been introduced C. are introduced 16. Many people think in the future, the real world ………………by the cyber world. A. won't replace B. won't be replacing C. won't be replaced

làm nhanh nha ko nhiều đâu Give the correct form of the words in the brackets in each of the following sentences 1.The pizza is_____________________ (enjoy) 2.Sally come in so_________that she woke up everyone(noise) Read the passage and decide which answer A, B, C or D best fits each space (72)______the United States, many adults and children(73)______overweight. Some people eat(74)_________food at meals. They also eat snacks between meals. Sometimes people eat healthy things like fruit or vegetables(75)_______many Americans eat a lot of junk fopd such as cookies, candies and potato chips. Eating junk food can(76)______people need to walk, run, ride bicycles, or walk out in health clubs and gyms. When people excercises, they(79)_______good and have more energy. A good diet and excercises will help you(80)_______along and (81)________life. 72. A.From B.On C.In D.At 73. A.are B.is C.was D.were 74. A.too much B.is C. plenty D.few 75. A. so that B. because C.although D.but 76 A. make B.get C. lead D.urge 77. A. however B.so C. because D.but 78. A. excercises B.money C.work D.energy 79. A. have B. feel C.make D. taste 80. A. living B. live C.to living D.lives 81. A. safe B.health C.fair D.healthy

Cho hai điểm A,B cách nhau 3cm. Vẽ đường tròn (A;2,5cm) và đường tròn (B;1,5cm). Hai đường tròn này cắt nhau tại C và D. a) Tính CA, DB b) Tại sao đường tròn (B;1,5cm) cắt đoạn thẳng AB tại trung điểm I của AB ? c) Đường tròn (A;2,5cm) cắt đoạn thẳng AB tại K. Tính BK. giúp mình với huhuhuhu

Bài 3:(2,5 điểm) Cho hai điểm A, B cách nhau 3cm. Vẽ đường tròn (A; 2,5cm) và đường tròn (B; 1,5cm). Hai đường tròn này cắt nhau tại C và D. a) Tính CA, DB. b) Tại sao đường tròn (B; 1,5cm) cắt đoạn thẳng AB tại trung điểm I của AB ? c) Đường tròn (A; 2,5cm) cắt đoạn thẳng AB tại K. Tính BK.

Hoà tan hoàn toàn 8,862 gam hỗn hợp gồm Al và Mg vào dung dịch HNO3 loãng, thu được dung dịch X và 3,136 lít (ở đktc) hỗn hợp Y gồm hai khí không màu, trong đó có một khí hoá nâu trong không khí 2 chất khí này là gì vậy?

Động cơ thang máy thực hiện công để đưa thang máy lên cao. Công trong trường hợp nào sau đây là lớn nhất? Biết thang máy khi không mang vật nào thì có khối lượng là 500 kg. A. Thang máy không mang vật nào và lên cao 20 m. B. Thang máy mang vật 100 kg và lên cao 25 m. C. Thang máy mang vật 50 kg và lên cao 30 m. D. Thang máy không mang vật nào và lên cao 35 m. giải thích với ạ

Câu 1: Vai trò của rừng và trồng rừng? Câu 2: Nêu nhiệm vụ trồng rừng của nước ta?

I.Choose the word in each line that has different stress pattern. 1.A. ecology B. environment C. autography D. residential 2. A. physiography B. alternatively C. criminology D. unsuccessfully 3. A. temporary B. geology C. emergency D. logography 4. A. astrology B. unnatural C. medication D. demography 5. A. voluntary B. apology C. television D. nationalize II. Complete each sentence with the correct word from the box. drought flood hurricane landslide tornado 1.When there is a _____________, a lot of water covers an area where the usually isn’t water. 2. A______________ refers to a long time without rain. 3. When there is _____________, a lot of rocks and earth fall down a hill. 4. A __________________ is a storm with a lot of wind that moves over water. 5. A__________________ is a storm in which the air moves very quickly in a circle. III. Complete the sentences with the past perfect form of the verbs in brackets. 1.Anita said she was very sorry for what she (do)…………………………… 2. When Sam (pay)…………………. The bill, we left the restaurant and went home. 3. It wasn’t surprising that she was tired .She (not sleep)………………….. for two days. 4. The road was blocked because a lorry (break down)……………………….. 5. My mother felt very nervous on the plane because she (not fly)………………..before. 6……………………………….(they/go) home when you arrived? 7. I (hear)……………the story before , so I didn’t find it very interesting. 8. After she (try on)…………………….. all the dresses in the shop, she bought the most expensive one. 9. They (not have)………………..breakfast when I got up. 10. The children were very excited because they (not see)………………….a tiger before. IV. Complete the sentences withthe correct form of the verbs in brackets. 1.After Nick (do)………………..his homework , he (go)………………..to bed last night. 2. Mai (live)……………..in Hai Phong for five years before she (move)…………… to Ha Noi three years ago. 3. Phong (tell)……………..me yesterday that he (learn)……………..French for a year. 4. Ms Hong (work)……………….at our school for twenty years before she (retire)………….last June. 5. By the time I (get)………………….to Nick’s house , his party (already/start)…………….. 6. When we (come) ………………………..back to our home village last month , it (change)……………………………so much. 7. By the time the bus (come)……………this morning, Duong (wait)………………..for it for half an hour.

Làm tròn số các số sau đến chữ số thập phân thứ 2: 0,384 ; 0,076 ; 0,038. mk ko giỏi về kĩ năng làm tròn số cho lắm

Giúp em ạ là những người giỏi giúp nhé