1. Yesterday ______ 8-year-old boy fell into the river. Luckily, ______ boy was saved by a policeman.

A. an; a                    B. an; the              C. a; the                D. a; an

2. He’s never been to the Great Wall, _______?

A. is he                    B. isn’t he            C. hasn’t he                 D. has he

3. —Mum, do you know when Dad         back?ª¤

—No, but I think he will telephone us when he         back.ª¤

A.will come, will come             B.will come, comes ª¤

C.comes.comes                      D.comes, will come