Question

【题目】The sweaters are so beautiful. I don’t know ________.

A. will buy which B. which to buy

C. which buy D. to buy which

Answer 1

【答案】B

【解析】试题分析：句意：那些毛衣那么漂亮。我不知道买哪一件。此处作为动词know的宾语从句用疑问词+to do，故选B。