15. He didn’t explain _______ why he was late, which made us unhappy.

　 A. of us　　　 B. us　　　 C. to us　　　 D. for us

14. Shanghai has _______ more US dollars this year than last year.

A. brought down　　　 B. brought up　　 C. brought in　　 D. brought out

13. _______, his wife will sit at the table to wait for him to come back.

　 A. However he is late　　　　　 B. However is he late

　 C. However late he is　　　　　 D. However late is he

12．Excuse me, but I don’t know how to read your name． Could you _____ it for me, please?

A. spell　 　　　　B. write　　　　 C．pronounce　　 D．spell

11.　 I told you 　　that car, and now look what’s happened．

　　 A． not buy　　 　B． don’t buy　　 C． not to buy　　 D． not buying