Exercise 1: Hãy chia động từ trong ngoặc theo đúng thì phù hợp và giải thích 1. She (not study) _____________ on Friday. 2 The children (play) _______________ in the park five minutes ago. 3. The kids (play) _________________ in the garden when it suddenly to rain. 4. John (not read) ________________ a book now. 5. My students (be not) ________________ hard working. 6. What _________ you (do) ______________ tonight? 7. ________ (you/go) ____________ to the zoo yesterday? 8. We (not/cycle) _________________ all day. 9. He (have) ___________________ a new haircut today. 10. What (you/do) ___________________ yesterday? 11. We (visit) ____________________ the museum at present. 12. I (be) __________________ late for school yesterday 13. I usually (have) _____________________ breakfast at 7.00. 14.The homework (be) ________________ very difficult yesterday. 15. Yesterday at six I (prepare) ____________________ dinner. 16. They (meet) _____________________ their teacher at the moment. 17. They (return) ____________________ home yesterday 18. Silvia (not listen) __________________ to music now. 19. I (practise)_____________________the guitar when he came home. 20. She (live) ______________________ in a house?