27. Does________ matter if he can’t finish the job on time?

A. this　　 B. that　　　 C. he　　　 D. it

答：D。

26. It was not until 1920 ________ regular radio broadcasts began.

A. while　　 B. which　　 C. that　　 D. since

答：C。此题为强调句。

25. I hate________ when people talk with their mouths full.

A. it　　 B. that　　　 C. these　　 D. them

答：A。it指下文提到的现象。

24. ______is five kilometers from his home to our school.

A. It　　　 B. This　　 C. That　　 D. There

答：A。it指距离。

23. Was________ that I saw last night at the concert?

A. it you　　 　B. not you　　

C. you　　　 　D. that yourself

答：A。为强调句的疑问句形式。

22. Was it in 1969 ________ the American astronaut succeeded ________ landing on the moon?

A. when, on　　 　　B. that, on　

C. when, in　　　 D. that, in

答：D。it用于强调句型中。

21. ______no need for us to discuss the problem again since it has already been set-tied.

A. It has　　　 B. There has

C. It is　　　 D. There is

答：D。no need为名词做主语。或用It is not necessary...。

20. ________is forbidden to smoke in the concert hall.

A. Here　　 B. It　　　 C. That　　 D. This

答：B。it做形式主语，不定式为真正主语。

19. We took ______for granted that he would join us.

A. this　　 B. that　　　 C. it　　　 D. them

答：C。it为形式宾语，真正宾语为that从句。

18. The baby sat on________mother’s knees, learning to speak.

A. it　　　 B. it’s　　　 C. its　　　 D. /

答：C。it可指代婴儿。