I’m very grateful for your help and hopethat someday I may be able to do something for you___．[ ]

Is this ____ math book – No, it isn’t____ . ____ is over there.

He _______ Shanghai, for I saw him talking with the headmaster a moment ago.

What does she usually use the computer _________– She usually uses it to chat with her friends.

Tom as well as his classmates __________ a song when the teacher came into the classroom