The students were singing an English song _______ Mr. Xiang came into the classroom.

He doesn’t think the question of ______theyare boys or girls is important

Where is Mr. Smith —He ___ Guangzhou. He ____ there for a week.

You can’t complain of being lonely__________ you don’t make an effort to meet people and make friends with them

The Smiths ______ their breakfast when the doorbell rang.