People usually think lions are _____ scary.
Have you found the information about famous people __ you can use for the report? — Not yet .I’ll search some on the Internet.
Mike, can you tell us something about our new teacher?– Oh, sorry. I know nothing because I _____________ him before.
His father promised _________ him to visit the museum.
In our city, ________ college students want to work in West China in the future.