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ducnghiembmt123
2 năm trước
một đoàn tàu có chiều dài l chạy trên một đường ray với vận tốc V1 Một người đi xe máy chuyển động song song với vận tốc V2 khi đoàn tàu chuyển động ngược chiều với người người này chạy qua đoàn tàu trong thời gian 6 giây khi đoàn tàu chuyển động cùng chiều với người này chạy vượt qua đoàn tàu trong thời gian 24 giây nếu đoàn tàu đứng yên. người đi xe máy sẽ chạy dọc theo đoàn tàu trong thời gian bao lâu
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Exercise 1: Past Simple or Present Perfect: Give the correct form of the verbs. 1. I................................ my Maths homework yesterday. (to do) 2. ................... you................... to England by plane? (to go) 3. They................................ a farm two weeks ago. (to visit) 4. Jenny and Peggy................................ their brother. (not/to help) 5. The children................................ at home last weekend. (not/to be) 6. When................... you................................ this wonderful skirt? (to design) 7. My mother................................ into the van. (not/to crash) 8. The boys................................ the mudguards of their bicycles. (to take off) 9. ................... you................... your aunt last week? (to phone) 10. He................................ milk at school. (not/to drink) 11. The police................................ two people early this morning. (to arrest) 12. My bicycle isn’t here. I think someone................................ it. (just take) 13. Dan................................ two tablets this year. (already/to buy) 14. How many games................................ so far this season? (your team/to win) 15. ................... the CN Tower when you................... in Toronto? (you/to visit - to stay) 16. ................................ your homework yet? - Yes, I................................ it an hour ago. (you/to do - to finish) 17. There ................................an accident in High Street, so we have to use King Street to get to your school. (to be) 18. I................................ Peter since I................................ last Tuesday. (not/to see - to arrive) 19. Frank............................... his bike last May. So he............................... it for 4 months. (to get - to have) 20. I’m sorry, I................................ earlier, but I................................ a lot lately. (not/to write - to work) Exercise 2: Fill in the blanks with so, too, either or neither and auxiliary verb. 1. Jim goes to school every day. ....................... Mary/ Mary ....................... 2. Carol studied Biology. ....................... Paul/ Paul ....................... 3. Mai is a very good student ....................... Phuong/ Phuong ....................... 4. Lily can’t play the guitar. ....................... Rosie/ Rosie ....................... 5. Mariana bakes delicious cakes ....................... Cindy/ Cindy ....................... 6. Ngoc Anh will sing tomorrow ....................... Mai/ Mai ....................... 7. Jonathan did the homework ....................... Michael/ Michael ....................... 8. Erick has told a funny joke ....................... Sarah/ Sarah ....................... 9. They didn’t eat the salad ....................... I/ I ....................... 10. My mother hasn’t finished the juice ....................... my sister/ My sister ...................... Exercise 3: Read the two sentences. Then combine them in one sentence using the equal comparison. 1. They have three children. We have three children. 2. We have 100 customers. They have 100 customers. 3. Tom has few books. Jane has few books. 4. There are few houses in his village. There are few houses in my village. 5. You know 150 people. I know 150 people. 6. I have visited the States 02 times. He has visited the States 02 times. 7. He has had lots of success. His brother has too. 8. John eats 01 kg food per day. Peter does too. 9. Jim is not patient Sam is not patient too. 10. You have heard lots of news. I have too.

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