. --- I think the waiter has forgotten us. We ________ here for over half an hour!
--- I think you’re right. He probably thinks we have already ordered.
| A．are waiting | B．have been waiting |
| C．have waited | D．will wait |
—What's the terrible noise?
—The neighbours __________ for a party.
| A．have prepared | B．are preparing | C．prepare | D．will prepare |
—Doyou think we should accept that offer?
—Yes, we should, for we ______ such bad luck uptill now, and time ______ out.
| A．have had;is running |
| B．had；is running |
| C．have；has been run |
| D．have had；has been run |
—Haveyou got any job offers?
—No. I __________
| A．waited | B．had been waiting | C．have waited | D．am waiting |
Teenagers __________ their health because they play computer games too much.
| A．have damaged | B．are damaging | C．damaged | D．will damage |
I __________ my guest off at the station tomorrow.
| A．am seeing | B．see | C．saw | D．have seen |