II。单项填空（共10小题；每小题1分，满分10分）
从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。
16. The church clock began to________twelve.
A. hit B. beat C.strike D. touch
17. The scene was______and the boys there were all______.
A. terrified; terrible B. terrifying; terrified
C. terrible; terrifving D. terrified; terrifying
18. We_____on this project for four hours. Let's have a rest.
A. are working B. have been working
C. worked D. had worked
19. -The tree is so tall.
-Yes, It ____ nearly 20 metres.
A. measures B. is measured
C. measure D. to be measured
20. In order to create a peaceful world, we should make every ____to protect theenvironment.
A. affect B.effect C. effort D. afford
21. Bill was doing a lot of physical exercise to builcl up his______.
A.ability B.force C.strength D.mind 22. It's surprising that your brother______English so quickly. He hasn't lived there very long.
