32. Mr. Hân is going to the USA for his holiday. He ________ up for nearly a year now. ​A. has saved ​B. is saving ​C. saves ​D. has been saving​ 33. The carpet ________. ​A. hasn’t been cleaned yet. ​B. hasn't cleaned yet. ​C. have yet been cleaned. ​D. has cleaned. 34. "Did you have a good time abroad?" - She asked me if ________. ​A. I have a good time abroad. ​B. I had good time abroad. ​C. I had had a good time abroad. ​D. I have had a good time abroad. 35. ________ this letter ________ last night? ​A. Is/ written​B. Is/ wrote​C. Was/ written​D. Were/ written 36. The houses where I used to live ________ very comfortable. ​A. is​B. was​C. are​D. were 37. After he ________ English course, he went to England to continue his study. ​A. will finish​B. has finished​C. had finished​D. have been finished 38. I wish I ________ a trip to London last year. ​A. had taken​B. took ​C. will take ​D. take​ 39. He started living here three years ago. ​A. He lived here three years ago. ​B. He has lived here for three years. ​C. He had been living here for three years. ​D. He had lived here three years ago. 40. Who ________ when I came? ​A. were you talking to​B. are you talking to ​C. you are talking to​D. you were talking to

Gọi P là chu vi hình tam giác có độ dài 3 cạnh là a, b, c. Tìm P biết A. A =5cm, b=10cm, c=12cm B. A=15cm, b=20cm, c=32cm

She fancy (cook). For the family

giúp mình với mình đang cần gấp

2/ Cho cấu hình e của một nguyên tử (A) 1s2 2s2 2p6 3s1 (B) 1s2 2s2 2p6 3s2 3p4 Từ cấu hình nguyên tử hãy xác định a/ Tên nguyên tố b/ Xác định loại nguyên tố c/ Viết kí hiệu nguyên tử của hai nguyên tố trên biết A có 12 notron , B có 16 notron d/ Viết cấu hình điện tử của A+ và cấu hình B2-

Bằng phương pháp hóa học hãy nhận biết các lọ đựng dung dịch không màu gồm: a) HCl; Ba(OH)2; Na2SO4; KCl b) HCl, H2SO4; Ca(OH)2; NaCl c) HCl; HNO3; Ba(OH)2; Na2SO4

Chính xác thôi,ai kinh nghiệm thì làm

1 We began to study English five year ago. -> We have ........................................................................................ 2 I started working for the company a year ago. -> I have ............................................................................................ 3 She started working as a nurse 5 years ago. -> She has ......................................................................................... 4 It started raining half an hour ago. -> It has ............................................................................................. 5 They have lived here for five years. à They started………………………………………………………………………………………

Lẹ lên e cần Gấp blanket blanket

Hòa tan 3,25g Zn bằng HCl thu được H2 và ZnCl2. Lấy toàn bộ lượng H2 tác dụng với CuO H2 + CuO → H2O + Cu Tính khối lượng Cu ?