23.　 ___________ I worked out this maths difficult problem easily .

A. With Mary’s help　 B. Under Mary’s help　 C. By Mary help　　 D. With Mary’s helping

22.　 I’ll go to the high school in Changchun ____________ .

A. later a few years　 B. after a few years　　 C. during a few years after　　 D. in a few years’ time 　

21.　 If he gives us _________ , we’ll finish this work .

A. more a few time　 B. a few more time　 C. more a little time　 　D. a little more time

20.　 I _________ you for a long time . Where __________ you __________ ?

A. didn’t see , did , go　　　 B. haven’t seen , have , been

C. didn’t see , have , gone　　 D. haven’t seen , have gone

19.　 ________ is important to learn English well .

A. He　　　 B. She　　　 C. It　 　　D. That　

18.　 I don’t know __________ here .

A. when he has moved　 B. when did he move　　 C. when he moved　 D. when will he move　

17.　 I won’t be free until she ___________ back .

A. is coming　　　 B. comes 　　C. will come　　 D. come　

17. - I’m lost my new dictionary .　　 - _____________ .

　 A. It doesn’t matter 　B. What a pity ! 　C. Glad to hear　　　 D. I’m sorry

16.　 I’m sorry to keep you ____________ for me so long .

A. wait　　 B. to wait　　　 C. waiting 　　　D. waited　

15.　 I don’t think they can work it out , ___________ ?

A. do I　　 B. don’t I　　 C. can they 　　D. can’t they