问题描述：
They often talk in the library.(就in the library 提问)
He must remain in bed for another two days.（就for another two days提问）
You must keep the room warm(就keep the room warm提问)
He must remain in bed for another two days.（就for another two days提问）
You must keep the room warm(就keep the room warm提问)
问题解答：
我来补答展开全文阅读