Mrs. Black doesn’t believe her son is able to design a digital camera, ________?

　 A. is he 　 B. isn’t he  C. doesn’t she 　 D. does she

________, he is honest.

A. As he is poor　　　　 B. Poor is he

C. Poor as he is　　　　 D. Poor as is he

He knows so much about the story. He must have read the book, 　　　　?

A. mustn’t he　　 B. doesn’t he

C. hasn’t he　　　 D. didn’t he

----- John won first prize in the contest.　　　　　　

----- _________.

A. So he did 　 B. So did he C. So he did , too 　 D. So did he, too

It’s the first time that he has been to Australia, ________?（ ）

A. isn’t he　　　　　　　　　 B. hasn’t he

C. isn’t it　　　　　　　　　　 D. hasn’t it