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Người ta mở hai vòi nước cùng chảy vào một bể không chứa nước thì sau 6h bể sẽ đầy .Nếu mở riêng vòi thứ nhất chảy trong 2h và vòi 2 chảy trong 3h thì đc 2/5 bể.Hỏi nếu vòi thứ hai chảy một mình thì bao lâu sẽ đầy bể?
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IV. Fill in the blanks with the correct form of the words in brackets. (5pts) 1. Cheese rolling is one of the …………………...sports. (SIMPLE) 2. There is even the World Toe Wrestling ……………………………. (COMPETE) 3. The Nobel Prize is presented by the ………………….King. (SWEDEN) 4. The Eiffel Tower is the world’s most visited …………………..place (TOUR) 5. Does your room need any …………………….…….? (EQUIP) 6. MrKien has a big ………………………….…of flowers. (COLLECT) 7. Oh, MrsQuyen sings English songs very……………………….. (BEAUTY) 8. That was a bad accident. He ……………… his car too carelessly. (DRIVER) 9. Are there any...............................in the room ? (MOUSE) 10. ………………………….….! Your team won the first prize. (CONGRATULATE) XII. Use the given word to write the second sentence in such a way that it is as similar as possible in meaning to the original sentence. Do not change the form of the given word. (5 pts) 1. Susan got wet. She forgot her umbrella. (because) ……………………………………………………………………………………………………. 2. The Australians enjoy Christmas. Christmas season is in summer. (although) ……………………………………………………………………………………………………. 3. Nga started to work for MB bank two years ago.. (for) ……………………………………………………………………………………………………. 4. Hurry up or you will be late for school. (if ) ……………………………………………………………………………………………………. 5. Yesterday, it was cold. Yesterday, it was windy. (not only ) ……………………………………………………………………………………………………….

3. My sister ………up late to study hard for her examination two days ago. A. sat B .sit C. sitted D. was sit 4. Their cows produce ………………... A. many milk B .a lot of milk C. lots milk D. a few milk 5. There aren’t …………….computers in Huong’s room. A. some B. any C. a D. an 6. My sister has been busy ……. all afternoons. A. cook B. cooking C. to cook D. cooks 7. They have bought a …… flat in Ha Noi. A. three floors B. three - floors C. three - floor D. three - flooring 8. John: “………………………..……..?” Mary: “That’s a great idea.” A. Do you like playing sports B. Can you buy me some apples C. Why don’t we go out for dinner D. May I borrow your pen 9. He will not pass the exam …….. he works hard. A. if B. or C. when D. unless 10. Lan ….. home for school yet. A. hasn’t left B. didn’t leave C. won’t leave D. doesn’t leave III. Give the correct tense or form of the verbs in brackets to the following sentences (5 pts) 1. There (not be ) any sugar in the pot. ………..………………….. 2. My sister wants (be) an actress after she leaves school. ………..…………………..2 3. Where are your parents now? - They (make) cakes in the kitchen. ………..………………….. 4. Studentsenjoy (ride) e-bikes to school . ………..………………….. 5. I (be) to Sa Pa twice since 2000. ………..………………….. 6. My daughter (begin) learning English in 2005. ………..………………….. 7. Would you like (take) a photo with me ? ………..………………….. 8. When I was small, I (live) in the countryside . ………..………………….. 9. Minh spends about an hour (play) volleyball everyday. ………..………………….. 10. I hope you (do) your test carefully . ………..…………………..

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