I have no idea is better so I took of them.A. what bothB. what noneC. which bothD.

问题补充：

I have no idea is better, so I took of them.

A. what, both

B. what, none

C. which, both

D. which, all

答案：

A. what, both

B. what, none

(答案→)C. which, both

D. which, all

解析：这题考查同位语从句，句意是：我不知道哪个更好，因为是better，所以是两者，选C。句意是:我不知道哪个更好，所以我两个都买了。选C。