The poet and ______ pianist is going to give us a talk this afternoon.

Are these books______.— No, they are not mine. They belong to(属于)________.

Susan decided not to work on the program at home because she didn’t want her parents to know what she______

I ______ for you for two hours, but in vainWhere did you go? —I ______ at my uncle’s

The scientist decided to devote his life to ____ pollution from ____ again.