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A. at B. on C. in D. of ( )12. I lost the way? I’m new here. A. What if B. As if C. How if D. When if ( )13. worried if you fail a test. A. Don’t be B. Not C. Don’t D. Don’t think ( )14. Students should concentrate more studies than clothes. A. to B. with C. on D. in ( )15. Do you ever that you’ll fail a test? A. think B. thinks C. thought ( )16. What a nice toy car? Is it yours? –Of course. It me 2 days to make the car. A. cost B. spent C. paid D. took ( )17. Will you keep the reading room ? A. quiet B. quiety C. quite D. quickly ( )18. I have no opportunity the matter with her . A. discuss B. discussing C. to discuss D. discusses ( )19. I find he is serious puter games. A. about playing B. to play C. about play D. in playing ( )20. Both my parents and I going t