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trang172
2 năm trước
Ở đầu gà 2n=78.xac định số lượng NST qua các ky của nguyen phân. Tất cả tế bào con đều vào vùng chín, tao thành tế bào sinh tỉnh trung giảm phần tạo tinh trùng. 1 tế bào nguyen phân lớn tiếp 4 lần, đội hội mỗi trưởng cung cấp bao nhiêu NST. Hội số tỉnh trung được tạo ra là bao nhiêu
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9. my father always (watch) ...tv in his free time 12. where is Ba?- he (play)... the guitar in his room 13. he(not come) ... to the party tomorrow night 14. what... your sister... (do) now?- she... (cook) dinner in the kitchen 15. We... ( not go) camping next week. we... (visit) the museum 16. miss Thanh is a journalist. she (not write)... for lao dong newspaper. she... (write) for nhan dan newspaper 17. i'd like ... (join) your club 18. why... you (make) ... so much noise in your room, lan? we(rehearse)... a play for the school anniversary celebrations 19. my sister (practice)... the violin in the club twice a week 20. they( give)... a farewell party next week 21. what ... your father usually (do)... in the evening ? he usually (watch)... tv, byt sometimes he (read) ... books 23. I (see) ... a movie next saturday. ... you (go)... with me? 24. wouold you like (listen ) ... to music ? 25.Mr Thanh ... (be) a doctor. he ... (work) in a hospital in the city center Every day, he ... (catch) the bus to work

Exercise 1: Circle best option A, B, C or D to complete the following sentences 1. ……………..straight across the road. A. Don’t run B. Not run C. No run D. Can’t run 2. I learn music………………. : on Mondays and Fridays. A. two times a week B. once a week C. one a week D. twice a week 3. What is your favorite food? A. I favorite chicken B. My favorite food chicken C. Chicken favorite me D. I like chicken best. 4. Linda ……… her hair every day. A. washes B. wash C. clean D. cleans 5. .How many minutes are there in………… hour? A. a B. an C. the D. these 6. Does Mrs. Mai go to school …………car? - Yes, she does. A. on B. in C. by D. of 7. Is he good ……….. Physics and Math? A. for B. at C. on D. in 8. I can’t speak French but my brother ……….... A. can B. can’t C. does D. doesn’t 9. My mother always wants me ………… the piano well. A. to play B. playing C. play D. to playing 10. Who ………… you English? A. teach B. does teach C. do teach D. teaches

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