The novelist knew little about the precious document(文件). _____, he had hardly heard of it before.

There’s rain on the road, so she should drive carefully.

Who is the man over there Is it Mr. Li –No, it _______ be him. Mr. Li is much taller.

This book ______ , because his name is on thebook.

He came to a point ______ there was no more road to follow, and before him he could see nothing but a thick forest.