“Have ________ try, you are so close to the answer,” the teacher said to Eric.

Are you going to Beijing by air?— It’s fast, but expensive. So I’m not sure. I _____ take a train.

_____ do you go shopping with your mother?— I seldom do that. [ ]

Who’s the man over there?Is it Mr. Black?——It______be him. He’s much taller.

We don’t have a school magazine ______, It’s a pity.