—I’d like to call you at 10 o’clock next Friday morning if it is convenient.
—I’m afraid I _______ an important meeting.

20. He reads newspapers every day to keep himself_______about what's going on in the world.  

－How long have you been at home?
－Half an hour. My son _________ me home.

. ---Remember the first time we met, Susan?
---Of course I do. You ______ in the library

A new house at the corner of the road ____ for years.

We all think it is Mr Wang as well as his parents that _______ for his son’s bad performance at school.

Almost all the houses in the city are said ________ in the terrible earthquake.

Bill ______ a couch potato and now he has a healthy lifestyle.

—What’s that terrible noise over there?
—The workers ______ the boxes from the back of the truck.

The boy was having a class when the earthquake broke out in yushu. He could have been killed if he      with his family.