As we all know, the advantage _______ is good for students’ self-improvement.
I’ll lend you the book _______ I can remember who has borrowed it.
. It is important to know exactly the message ________ and ________.
I ______ that we purchase 10 copies of Travel to the Misty Country for the library. (A librarian writes to the head)
We ______ him to stop surfing the Internet, but he wouldn’t.
He left the place, _____never _______back again.