1 ask and answer
A:What's happened?
B:They've had an accident.
A:When did it happen?
B:Five minutes ago.
A:Has anyone called the police?
B:Yes,they have.
A:Is anyone hurt?
B:Yes,a man is hurt,but not badly.
A:Where have Bruce and Sue gone?
B:They've gone to Lindon.
A:Have they ever been there before?
B:No,they have never had the chance.
A:What have they gone there for?
B:They have gone to visit their grandparents.
A:When are they going to return?
B:I think they'll return next month
vt. 控告,起诉
vi. 请求,追求,起诉