This is a difficult problem. I wish I _______the answer. a. know b. knew c. had known d. would know 12. She arrived _______two o’clock_______ the morning. a. at/ on b. in/ in c. at / in d. on/ in 13. I wish I earned more money, but in fact I _______. a. don’t b. did c. earn d. didn’t 14. We _______her a happy new year. a. wished b. said c. told d. wanted 15. Brown and yellow hair is fashionable_______ the moment. a. in b. at c. over d. on 16. Tan doesn’t know_______ about sports. a. nothing b. things c. anything d. something 17. I knew Jane_______ I was a child. a. until b. as c. during d. through 18. It’s pouring with rain again! If only I_______ an umbrella. a. have b. having c. had had d. had 19. Precious metals such as gold, silver_______ for making jewelries. a. used to b. are used c. is used d. used 20. Wear a helmet when riding a motorbike. Helmets are used_______ our heads. a. to protect b. protect c. protecting d. protected 21. _______ did you start playing basketball? –I was 15 years old. a. Why b. Where c. How d. When 22. We must wait _______ Friday for our final exam results. a. after b. by c. until d. later

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