There are four ________ students in our school.

Can you sing this song in English? — Of course I can. It ______ often ______ by us kids.

On weekends I like to with my friends in the supermarket.

Let’s go and play ______ ping-pong. I don’t want to play ______ violin.

If there are _______ people driving, there will be _______ air pollution.—Yes, the air will be fresher.