Question

【题目】There are so many foggy days these days. We all want to know ___________.

A. what can we do to prevent it

B. how to prevent it

C. we can do anything to prevent it

Answer 1

【答案】B

【解析】

试题分析：句意：这些天有如此多的雾，我们都想知道怎样阻止它。本题考查疑问词+to do的形式。根据题意，故选B。