1. unfair　　 2. customers　　 3. avoiding　　　 4. ahead　　 5. manages　　 6. folded　　　　　 7. crazy　　　 8. parted　　 9. firm/handshake　　 10. bowed　　 11. through　　 12. torn　　 13. bent　　 14. tap　　 15. gently　　　 16. anger　　　 17. occur　　 18. focus　　　　 19. useless　　 20. fists

20.　 He struck me with his _______(拳头).

21单元答案

19.　 Don’t do that, it’s u______.

18.　 Please _____(聚焦) your minds on the following problem.

17.　 Don’t let the mistake o_____ again.

16.　 He filled with a______ at the way he had been tricked.

15.　 It seems that the flowers here speak to each other g______ at night.

14.　 He felt a t_____ on his shoulder.

13.　 She b_____ down and picked up a pen.

12.　 Many old buildings here will be t______ down soon.