问题补充:
There are so many kinds of MP3 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
(答案→)C. which to buy
D. to buy which
解析:原句意思是:商店里有这么多种MP3播放器。我们决定不了要买哪一个。选项A. what to buy买什么(指在不同种类中选);B. to buy what买什么(词顺序有错,不合语法);C. which to buy要买哪一个(指在所有的选项中选择买哪一个);D. to buy which买哪一个(词序有错,不合语法)。根据句意答案选C。