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hunghihi
2 năm trước
Rút gọn các biểu thức sau: a, căn 27-10 căn48a+3 căn a với a > hoặc=0 b,x/5 căn16/x^2 +2 căn 81 -căn2/x . căn x với x>0
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I. Choose the best answer : 1. Sarah gave up ______ to find a job in this country and decided to go abroad. A. apply B. to apply C. applying D. application 2. Do you want ______ with you or do you want to go alone? A. me coming B. me to come C. that I will come D. that I come 3. I’m sure I locked the door. I clearly remember _____ it. A. locking B. to lock C. to have locked D. to be locked 4. She tried to be serious, but she couldn’t help ______. A. laughing B. to laugh C. that she laughed D. laugh 5. I like _____ the kitchen as often as possible. A. not cleaned B. clean C. to clean D. that I clean 6. He tried to avoid ______ my question. A. answering B. to answer C. answer D. how to answer 7. Could you please stop _______ so much noise? A. to make B. make C. making D. to have make 8. I enjoy ______ to music. A. listen B. to listen C. listening D. listened 9. Have you finished ______ your hair yet? A. wash B. washed C. washing D. to wash 10. Jim is 65, but he isn’t going to retired yet. He wants to carry on _____. A. to work B. work C. works D. working 11. Hello! Fancy _____ you here! What a surprise! A. to see B. seeing C. seen D. see 12. I’ve put off _____ the letters so many times. I really must do it today. A. write B. to write C. written D. writing 13. What a stupid thing to do! Can you imagine anybody _____. A. being B. be C. to be D. were

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