--Could you tell me____the computer to surf the Internet?--Sure. It’s very easy. Look, like this.
--I hear Jack Chan will come to Laiwu next week. --Really? _______ he comes, my younger sister will be very happy,
--Alice, please tell Eric to call me when he _____ back. --No problem.
There are ________ people in the supermarket. It’s so crowded.
Most of the young people enjoy ______ Jay Chou’s songs.
—My father has decided to ______ smoking. --That’s good news for us.