---Is that Mr Smith?---It __________ be him. He is in New York on business these days.
—How about raising money for the poor children in our school? — .
I think teenagers should do some meaningful things instead of ________ too much.
The book isn’t mine. It belongs to ______.
If you want to keep healthy, you should try your best ____cigarettes. .
—What a hot day! —The weather report says it will be even tomorrow.