Giải chi tiết ( nêu lí do chọn câu đó ) giúp em vs 1. The farmers _____ in the field now.        A. were working       B. have worked       C. worked      D. are working 2. The war _____ out three years ago . A. broke  B. had broken    C. has broken       D. was breaking 3. He ______ a cup of coffee every morning.  A. drinks  B. drank  C. is drinking      D. has drunk 4. She ______ a lot of new books.        A. had just bought        B. has just bought        C.just  buys       D. just bought 5. Up to the present, Nam_____ good work in his class.        A. does        B. has done       C. had done       D. did 6. At present, that author ______ a historical novel.        A. is writing       B. was writing       C. has written     D. had written 7. Phong ______ at the university so far.        A. had worked       B. was working       C. worked     D. has worked 8. How long _____ able to drive? – since 1990.        A. could you       B. have you been       C. were you       D. are you 9. I _____ the money from him yet.        A. haven’t received       B. don’t receive       C. will receive     D. am receiving 10. I ____ him ten days ago. A. see        B. saw  C. have seen  D. will see

1D - thì hiện tại tiếp diễn ( now)

2D - thì quá khứ tiếp diễn ( có mốc tgian rõ ràng)

3 A - hiện tại đơn ( every morning)

4 B ( câu này k chắc)

5 B ( up to the present dùng ht hoàn thành)

6  A ( at present -ht tiếp diễn)

7D (so far-htht)

8B ( since -ht hoàn thành)

9A ( yet)

10 B

1. The farmers _____ in the field now.
A. were working       B. have worked       C. worked      D. are working

2. The war _____ out three years ago.
A. broke  B. had broken    C. has broken       D. was breaking

3. He ______ a cup of coffee every morning. 

A. drinks  B. drank  C. is drinking      D. has drunk

4. She ______ a lot of new books.       

A. had just bought        B. has just bought        C.just  buys       D. just bought

5. Up to the present, Nam_____ good work in his class.  

A. does        B. has done       C. had done       D. did

6. At present, that author ______ a historical novel.       

A. is writing       B. was writing       C. has written     D. had written

7. Phong ______ at the university so far.

A. had worked       B. was working       C. worked     D. has worked

8. How long _____ able to drive? – since 1990.       

A. could you       B. have you been       C. were you       D. are you

9. I _____ the money from him yet.    

A. haven’t received       B. don’t receive       C. will receive     D. am receiving

10. I ____ him ten days ago.

A. see        B. saw  C. have seen  D. will see