一、單項選擇

1．Nothing he had done turned out to be useful, _______________?

A．did it                                                         B．had he

C．hadn’t he                                                  D．didn’t it

2．—I spend two weeks in Beijing last year.

—Then you must have visited the Great Wall during your stay, ________ you?

A．mustn’t                                                     B．didn’t

C．haven’t                                                     D．hadn’t

3．There is little doubt in your mind that he is innocent, _______?

A．is there                   B．isn’t there               C．is he                      D．isn’t he

4．Mrs. Green doesn’t believe that her son is able to design automobiles, ?

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