(Làm đầy đủ cả tóm tắt và lời giải giúp mình nha) Một máy kéo khi hoạt động với công suất 1500W thì nâng được vật nặng 60kg lên cao 10m trong 8 giây a) Tính công mà máy đã thực hiện trong thời gian nâng vật b) Tính hiệu suất của máy trong quá trình làm việc

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Give the correct form of the verbs. 1.Nam often (go) ____________________ to school by bike every day. 2. A lot of people (go) ____________________ to work by car. 3. John usually (take ) ____________________ the bus to school. 4. He (play ) ____________________ volleyball at present but he ( not enjoy ) __________________ it . 5. School children (wear ) ____________________ uniform on Monday. 6. Mary often ( go) ____________________ to work on foot . 7. Bad students never ( work) ____________________ hard. 8. They ( not be ) __________ doctors. 9. He ( call ) __________ __________you tomorrow. 10. Mr. Nam ( come ) __________ and ( help) __________ me tomorrow. 11. They (work/not) __________with me. 12. Everything ( not be ) __________ ok if you don’t work hard. 13. She ( call ) __________me this weekend. 14. I ( give ) __________you that money today. 15. She ( not help ) __________you with that exercise. 16. My father (be ) __________ here at 5 : 30 p.m. 17. He (go) __________ to school yesterday. 18. Mary ( go) __________ to work last night? 19. John ( not/take ) __________ the bus to school yesterday. 20. He (not/ play ) __________ volleyball yesterday . 21. She (go ) __________ to school since last Sunday. 22. Mary (walk) __________ to work on foot yesterday . 23. My father (watch ) __________ TV last night. 24. They (not be ) __________ at home yesterday. 25. He (go) __________ to Ha Long Bay for 2 weeks. 26. Mary (work) ________________________ here since last night. 27. Nam (take ) ________________________ the bus to school since last night? 28. He (play) ________________________volleyball for 10 years . 29. She (not go) ________________________ to school since last Sunday. 30. Mary (walk) ________________________ to work on foot so far . 31. My father ( ever/watch ) ________________________ TV for 3 days. 32. They (not be ) ________________________ at home since yesterday. 33. __________ ever you (be ) __________ to the zoo yet ? 34.They (live ) ________________________in Thanh Hoa City since 2001.