Các bn lm cho mk bài này vs! Mk cảm ơn nhiều ạh!

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I. Chia động từ trong ngoặc cho đúng thì (Give correct tenses of the verbs) 1. Mary (be) ____________________ seriously ill since last night. 2. They sometimes (go) ____________________ school by bus. 3. How long __________ you (study) __________ English? - I (study) ____________________ it for 7 years. 4. We last (see) _____________ them last Sunday. 5. I (not meet) ____________________ him since he moved to Hanoi. 6. Now they (play) ____________________ happily in the school yard. 7. We (not finish) ____________________ our exercises yet. 8. My friend said he (be) __________ working in Hanoi then. 9. Mr. David (just buy) ____________________ a new house. 10. They (build) ____________________ a new hospital in my neighborhood next month. 11. It (not rain) ____________________ since the beginning of this month. 12. They ( leave )___________the village before the storm arrived. 13. We (begin) ____________ to learn English three years ago. Now we (learn) __________________ for 3 years. 14. __________ you ever (be) __________ to Ho Chi Minh City? 15. The telephone (ring) __________ when we (watch) ___________ television last night. 16. Mrs Hoa (teach) _________ English in this school since she (leave) ______ the university. 17. Look! That car (run) _________________ very fast. 18. The Browns (have) ____________________ dinner at the moment. 19. He (live) ____________________ in Hanoi for 20 years. 20. Alexander Graham Bell (invent) _____________ the telephone many years ago.