Who is ______ man with glasses? — Oh, he’s our new English teacher, Mr. Li.
Who’s the man over there?Is it Mr Black?—-It _____be him.He’s much taller.
Do you have a _____? — Yes, I _____ at a clothes shop.
Another thing that he _________ very difficult was English grammar.
There’s a lot to do. We can’t __________ to waste any time.