Congratulations! Among the best pictures in the competition, I found _________. When did you draw it?—During the trip to the Yellow Mountain _________ May.

Excuse me, where is Mr Brown’s office?—Sorry, I don’t know. I ______ here for only a few days.

Don’t you think this is useful advice?

At present, many people would rather _________ in the country because there is _____ pollution in the city.

He haswork to do, so he can’t go with you.