— Do you know sound travels very fast? — Yes. But light travels         sound.

—Can I talk to you for a minute?　　         —Sure. I have ______ time.

We have to stay at home instead of going finishing because it is raining        .

—  What are you going to do this weekend?—  I’m not sure ______. Maybe I am going swimming.

My parents _________ at home on weekends.