1. -How much water is left?

　 -__________.

　　 A. Nothing　　　 B. No one

　 C. None　　　　 D. Only little

答：C。none常用来回答针对不可敷名词或可敷名词复敷提出的问句．no one常用来回答针对可数名词单敷提出的问句．题中Nothing在此处是所问非所答，若问What’s in the cup?可用Nothing回答．一般不说only little(few)而应说only a little(few)。

28. Not until all the fish died in the river, _______ how serious the pollution was.

A. did the villagers realize

B. the villagers realized

C. the villagers did realize　

D. didn’t the villagers realize

答：A。见22题解析。

27.　 finally got the job I dreamed about. Never in all my life_________ so happy.

A. did I feel　 　B. I felt

C. I had felt　 　　D. had I felt

答：D。见第1l题解析。根据in all my life时间状语可判断用完成时。

26. Not a single song _____ at yesterday’s party.

A. she sang　 　　　B. sang she

C. did she sing 　　　D. she did sing

答：C。否定词在句首用倒装句式。

25. At no place _______.

A. smoking is allowed　　 B. smoking allows

C. is smoking allowed　 　D. allows smoking

答：C。at no place属于否定词放在句首，应用倒装句式。见第1l题解析。

24. -It was careless of you to have left your clothes outside all night.

-May God! ________.

A. So did I　 　　B. So I did

C. So were you 　　D. So did you

答：B。强谓同一个人同一件事时不倒装。

23. ________ he comes to school late.

A. Always　　 　B. Seldom　

C. Never　　 　D. Sometimes

答：D。否定词放在句首应用倒装句式，故排除B项和C项。频度状语如always，often，usually，once in a while等用于句首时应用倒装句式，但当some times放在句首时，不用倒装句式。

22. Not until I began to work_________ how much time I had wasted.

A. didn’t I realize　　　　 B. did I realize

C. I didn’t realize　　　　　 D. I realize

答：B。“not until+状语从句’放在句首时，从句不倒装，主句用倒装句式。

21. Not until the early years of the 19th century ________ what heat is.

A. man did know　　　　　 B. man knew

C. didn’t man know　　　　 D. did man know

答：D。“not until+状语”故在句首时，用倒装句式。

20. -David has made great progress recently.

　 -_________, and

A. So he has, so you have　

B. So he has, so have you

C. So has he, so have you　

D. So has he, so you have

答：B。表示“某人也……”用倒装句式。表示“某人的确如此”不倒装。