Are Mr. and Mrs. Wang living alone in the house? —-Yes, altough they have three sons, of them live with their parents.

There was going to ___ a struggle between her two friends. She doesn’t know __ to deal with it.

Many of the students in my class go to school _______.[ ]

So far, how long _______ you __________ China? — For one year.

Is Mr. Smith driving here? —I’m not sure. He ______ come by subway.