There are five pairs but Im at a loss which to buy.A. to be chosenB. to choose fromC.

问题补充：

There are five pairs, but Im at a loss which to buy.

A. to be chosen

B. to choose from

C. to choose

D. for choosing

答案：

A. to be chosen

(答案→)B. to choose from

C. to choose

D. for choosing

解析：此题容易误选C，其实应选B。choose表示“选择”，其实是指“选择出来”(pick out)，而不是指“从……选择”，要表示后者的意思，要用choose from，有时也用choose among。

【标签】不定式作定语