cho phân số 29/ 99 hãy tìm 1 số sao cho khi đem tử số và mẫu số của phân số đã cho cộng với số đó ta được phân số tối giản là 1/3.

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7. Sandra has become a style _____________ for the fashion world particularly, A. icon B. image C. item D. category 8. She _____________ in Hanoi for 2 years. A. lives B. is living C. have lived D. has lived 9. How _____________ your sister _____________ to school every day? A. is - going B. has - gone C. do – go D. does – go 10. At present they _____________ to New York. A. traveling B. are travelling C. travelled D. to travel 11. My father _____________ some flowers in the garden. A. waters B. has watered C. is watering D. water 12. I’ll come home _____________ 8.30 and 9.20. A. between B. from C. with D. at 13. Vietnamese people are always proud _____________ their traditions and customs. A. on B. in C. of D. at 14. Many visitors _____________ to Ho Chi Minh's Mausoleum every day. A. come B. comes C. is coming D. has come 15. I'm trying to fit everything into my busy _____________. A. missions B. schedule C. program D. tasks 16. I _____________ Paul today, but I saw him last Sunday. A. will not see B. will not be seeing C. have not seen D. has not seen 17. We have never _____________ another country before. A. visit B. visited C. visiting D. visitor 18. At present, he _____________ a piece of music. A. is composing B. has composed C. will compose D. composed 19. I have never _____________ such a good novel before A. to read B. reads C. reading C. reading 20. Nowadays, viewers can watch a variety of local and international programs _____________ TV. A. on B. in C. at D. of 21. We _____________ a party tomorrow. A. have B. are having C. have had D. were havin