It takes me half an hour to Shanghai.A. to flyB. fliesC. flyD. flying

问题补充：

It takes me half an hour to Shanghai.

A. to fly

B. flies

C. fly

D. flying

答案：

(答案→)A. to fly

B. flies

C. fly

D. flying

解析： take 用于 it takes sb ... to do sth句型，仅指花费时间（three hours等），必须用it作形式主语；故选A。