为了使讲话和行文简洁，句中某些成分有时可省略。省略可分以下几种情况：

(一)简单句中的省略

1、省略主语：祈使句中主语通常省略。其它省略主语多限于少数现成的说法。

　　　 e.g. (I) Thank you for your help.(括号内为省略的词语，下同)

　　　　　　　 (I) see you tomorrow.　　　　　　　　　 (It) Doesn’t matter.

18. So ____ that no fish can live in it.

　　　 A. shallow is the lake　　 B. the lake is shallow　　 C. shallow the lake is　　 D. is the lake shallow

17. ____ is not everybody ____ can draw so well.

　　　 A. It, all　　　　　　　　 B. It, that 　　　　　　　　　　 C. There, who　　　　 D. There, that

16. It was ____ I met Mr Green in Shanghai.

　　　 A. many years that　　　　 B. many years before　　 C. many years ago that　 D. many years when

15. Mary speaks in a low voice; ____ is difficult to know what she is saying.

　　　 A. it　　　　　　　　　　　 B. that　　　　　　　　　 C. so　　　　　　　　　　 D. she

14. Was it because he was ill ____ he asked for leave?

　　　 A. and　　　　　　　　　 B. that　　　　　　　　　 C. that’s 　　　　　　　 D. so

13. It was on October 1st ____ new China was founded.

　　　 A. which　　　　　　　 B. when　　　　　　　　 C. as　　　　　　　　　　　　　　 D. that

12. It was in the rice fields ____ we had our league meeting.

　　　 A. where　　　　　　　 B. that　　　　　　　　　 C. in which　　　　　　 D. on which

11. It was through Xiao Li ____ I got to know Xiao Wang.

　　　 A. who　　　　　　　　　 B. whom　　　　　　　 C. how　　　　　　　　　 D. that

10. How long ____ to finish the work?

　　　 A. you’ll take　　　　 B. you’ll take it　　　 C. will it take you　 D. will take you