11. Go and sit ....... Richard. A. beside B. next to C. by D. all are correct 12. This is the boy ...... father is an architect. A. who B. his C. whose D. which 13. I ...... English for 6 years now. A. am studying B. will have studied C. have been studied D. have been studying 14. My uncle has given up ....... A. smoke B. smoking C. to smoke D. smoked 15. Have you been Ho Chi Minh city? A. Until you not B. Already not C. Still not D. Not yet 16. I've got a new grammar book. - ....... A. How many cost? B. How much price? C. How much is it? D. How much you pay? 17. At four o'clock Mr Huchinson still had some ...... to do in his garden. A. work B. job C. effort D. take 18. He has always been generous and he still ....... A. has been B. was C. is D. has 19. Thank you for ....... me. A. invite B. invited C. inviting D. invitation 20. The lesson is ....... difficult that nobody can understand it. A. so B. such C. very D. a lot

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