题目内容：

1.We should keep our reading room___.
A.quietly B.quiet c.silent D.silently
选D,为什么不可以选c?
2.The goverment should stop factories_____producing unhealthy gases.
A.by B.in C.with D.from
选D,为什么?

优质解答

keep 是系动词,后面接形容词作表语
stop---from =prevent ---from是固定搭配