You'd better keep your mouth ___ and your eyes ____

问题描述:

You'd better keep your mouth ___ and your eyes ____
a.shut; open b.close; open
c.shut; opened d.closing; opened
选A,为何?怎么翻译?

意思是你最好闭嘴,用眼看就行了
闭嘴是用shut.有shut up!的用法
open的形容词就是open,不加ed
所以选A