There are so many kinds of Mp4 in the shop. We can’t decide . A. what to buyB. to buy wha

问题补充：

There are so many kinds of Mp4 in the shop. We can’t decide .

A. what to buy

B. to buy what

C. which to buy

D. to buy which

答案：

A. what to buy

B. to buy what

C. which to buy

D. to buy which

解析：考查动词。句意 在商店里这有许多Mp4，我们不能决定买哪一个。Decide 后面跟宾语，由特殊疑问词+to do 做宾语，再根据题意判断，决定买哪个，所以选C项。