14．has gone, left
17．if, would come
24．was walking / walked
1．I hear your sister has married．Is it true?
Yes, she has been married for 5 years．
She has been married to a doctor．
2．Has your brother joined the army? Yes, he has．
When did he join the army? He joined the army in 1990．
He has been in the army ( has been an army man ) for 5 years．
3．Where is your father? Is he in ( at home )?
No, he isn't ( in )．He has gone to America．
He went there three years ago．He has been there for 3years．
1．Yes, it is．
2．Are there any English books in the desk?
3．He doesn't have tea at half past two in the afternoon．
4．How long will it take the workers to repair the bridge?
5．Did you do your homework by yourself yesterday?
6．He hadn't done with the goods before he went away．
7．Whose mother was the teacher talking with?
8．How often are you allowed to watch TV at home?