强调句句型的写作练习

　　It was Jefferson who wrote the Declaration of Independence.

　　It is with genuine feeling that the author praises all that is progressive.

　　It was because the water had risen that we could not cross the river.

　　It was Jim, a heartless fellow, who was heard shouting at his mother in the dead of night.

　　It was not until I told her that Mrs. Williams knew anything about it.