She was very us for informing her of her son’s safe return.
| A．grateful to | B．grateful for |
| C．grateful | D．grateful with |
—Excuse me, could you tell me where_____? — Sure, sir. You can try
| A．can I join in the group-buying |
| B．did I join in the group-buying |
| C．I can join in the group-buying |
| D．I joined in the group-buying |
— I don't know______. — Because he has to look after his mother.
| A．why he is leaving | B．why is he leaving |
| C．whether he is leaving | D．whether is he leaving |
— Could you tell us how long ___? — About three days.
| A．does the sports mooting last |
| B．the sports meeting will last |
| C．the sports meeting last |
| D．will the sports meeting last |
— I don’t knownext. — Let’s ask our teacher for help.
what to do B. what should I do C. how to do D. how I should do
— Are you going to Beijing for the summer holiday next week?
— Yes. But I haven’t got the air tickets and don’t know we will set out.
| A．how | B．where | C．when | D．what |