问题
选择题
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
C
题目分析：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。