He _____ be at home, because the light is on.

Are Mr. and Mrs. Wang living alone in the house? —-Yes, altough they have three sons, of them live with their parents.

第一部分：单项选择—Make sure you have turned off the air conditioners before going out.—_______________.

Have you finished your work yet?　—No, not yet. I think it’ll take _____ ten minutes.

I hear Mr Brown lives here, but I’m not sure .