题目

Don't keep your mouth ___ if you want to improve your spoken English.   A. shut        B. shutting        C.shutted       D. to shut 答案：A 解析: keep这里意思是；使保持，后面要求接形容词用它的宾补，而不是keep sth. from doing.。C、D两选项不符合题意。

查看本题答案和解析