30.If this dictionary is not yours,______ can it be?

A.what else　　　　　　　 　 B.who else　　　　　　　　　　 　 C.which else’s　　　　　 　 D.who else’S

29.I knew I shouldn’t accept anything from such a person, but I found it difficult to refuse his

________.

A. principle　　　　　　 B. purpose　　　　　 C. offer　　　　　　　 D. order

28.----- Will you stay for lunch?

　 ----- Sorry, I _____. My mother is coming to see me.

A. mustn’t　　　　　　 B. can’t　　　　　　 C. needn’t　　　　　　 D. won’t

27.The Nile River_____flood large areas but now the water_______produce electricity.

A. used to; is used to　　　　　　　　　 B. used to; used to

C. was used to; is used to　　　　　　　 D. was used to; used to

26. The restaurant is ________ the one near our school.

A. as four times big as　　　　　　 B. four time big as　

C. four times the size of　　　　　　 D. four times as bigger as

25. I’m not sure whether such ______ all the means that _______ been tried.

A. is; has　　　　　 B. are; have　　　　　 C. was; has　　　　　 D. was; had

24.Elephants would ___ if men were allowed to shoot as many as they wished.

A. die down　　　　　 B. die out　　　　　 　C. die from　　　　　 D. die of

23. She is the only one among the ____ writers who _____ stories for children.

A. woman; writes　　　 B. women; write　　　 C. women; writes　　 D. woman; write

22.Yang Mei was badly _______ by your words. You ________ that to her.

A. wounded; should say　　　　　　 B. injured; mustn’t say

C. hurt; shouldn’t have said　　　　　 D. hurted; wouldn’t say

21. 10% of the population here ______ from the strange disease now.

A.suffer　　　　　　 B.suffers　　　 　　C.are suffering　　　　 D.is suffering