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Ở lúa nước 2n=24 . Hãy chỉ rõ:a/ số NST ở kỳ trung gian của nguyên phân.b/ số NST ở kỳ giữa của nguyên phân.c/ số NST ở kỳ sau của nguyên phân.d/ số NST của mỗi tế bào ở kỳ cuối của nguyên phân ( sau khi đã phân chia tế bào chất). giải thích rõ
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Full name: Period 45+ 46 Class: 6 PRACTICE: THE PAST SIMPLE I. Give the correct form of the verbs in the past tense. 1. do 11. buy 2. teach 12. have 3. send 13. take 4. spend 14. go 5. begin 15. make 6. cut 16. think 7. put 17. see 8. give 18. eat 9. write 19. sing 10. be 20. wear II. Use the right form of the Simple Past tense: 1. I (see) …………….him yesterday. 2. I (be) ………………born on January 5,1954. 3. I (play) ……………..football every Sunday afternoon last year. 4. He (teach) …………..English from 1950 to 1960. 5. His uncle (go) ……………..to work late yesterday morning. 6. Those people (speak) ……………….English with each other last meeting. 7. Helen (be) ………………..absent from school yesterday. 8. John (not-be)……………..in school yesterday. 9. There (be) ………………a lot of students absent from class yesterday morning. 10. We (not-be) ………………..able to get in touch with Mr Reese last night. 11. The wind last night (be) ………………very strong? 12. My brother (be) ………………….in London from 1950 to 1955. 13. Last Monday (be) …………….a very hot day. 14. Those two men (be) ………………….very poor a year ago. 15. Where you (do) yesterday morning? We (work) ………………..in the garden yesterday morning. 16. Helen and I (talk) ……………….on the telephone yesterday. 17. We both (learn) ……………..how to swim many years ago. 18. The meeting last night (begin) ………………at eight and (end)………………………. at ten. 19. I (stay)……………….. home and (write) ……………..several letters last night. 20. I (see) …………………Helen on the street yesterday. 21. I (hear) …………………the President speak on TV last night. 22. Helen (feel) ………………….very well yesterday. 23. We (go) ……………….to the park yesterday and (get) ……………wet when it (rain) III. Write the questions with Wh – words 1. They played soccer last week (What) …………………………………………………………………………………….. 2. We decorated our classroom on Saturday evening. …………………………………………………………………………………….. 3. Hoa tried her new dress on? (What) …………………………………………………………………………………….. 4. He talked to his teacher about the film on TV (Who) …………………………………………………………………………………….. 5. The students wore uniforms at school (What) …………………………………………………………………………………….. 6. They travelled to the USA by plane last month (How) …………………………………………………………………………………….. 7. I saw her last night. (when) …………………………………………………………………………………….. 8. We arrived at school at a quarter to seven.( What time) …………………………………………………………………………………….. 9. David went to school by bike yesterday. (How) …………………………………………………………………………………….. 10. I bought a lot of different souvenirs. (What) …………………………………………………………………………………….. 12. My father was in Ha Noi last month. …………………………………………………………………………………….. 13. My mother was at home last night. …………………………………………………………………………………….. VI. Use the right form of the verbs then answer the questions Yesterday (be) ……...Sunday, Nam (get) …………….up at six. He ……….(do) his morning exercises. He (take) …………a shower, (comb) …………..hair, and then he (have) ………… breakfast with his parents. Nam (eat) ……….a bowl od noodles and (drink) ………………….a glass of milk for hid breakfast. After breakfast, he (help)………………Mom clean the table. After that, he (brush) …………his teeth, (put) ………….on clean clothes, ang (go)………..to his grandparents’house. He (have)…………lunch with his grandparents. He (return)………………to his house at three o’clock. He (do)……....his homework. He (eat)………… dinner at 6.30. After dinner, his parents (take)…………………….him to the movies theater. It (be) …………very interesting film. They (come) ………..back home at 9.30. Nam (go) to bed at 10 o’clock. Answer the questions: 1. What day was yesterday? …………………………………………………………………………………….. 2. What time did Nam get up? …………………………………………………………………………………….. 3. What did he do after breakfast? …………………………………………………………………………………….. 4. Who did he have lunch with? …………………………………………………………………………………….. 5. What time did he have dinner? …………………………………………………………………………………….. 6. What time did Nam go to bed? V. Fill each blank with a word/phrase in the box badminton, doing, aerobics, sports , swimming, gym, games, twice, racing, jogging 1. Which……………….. do you often play at the weekends? 2. My brother plays soccer………………….a week. He does it on Saturday and Sunday. 3. How often do you go………………………………? Every morning. 4. My friend loves to swim. He goes……………………………. every Sunday. 5. What do you like……………………………………… best in your free time? 6. I like to watch motor …………………… on TV. It's really exciting. 7. Why does your brother like going to the …………………………….? Because it is great 8. Last weekend I played ………………….with Mai and we had a very goodtime. 9. Many girls in my class like doing ……………………… to keep fit. 10. In Viet Nam, we play different…………………………. during the break time.

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