—Did you know more about the mine accident?
—Oh，sorry，I had no idea. I ________ the Rescue Center now.
| A．will be phoning | B．am to phone |
| C．will phone | D．phone |
—Did you enjoy yourself last night?
—Yes, it's very nice of you. I appreciated __________ to the party.
| A．to be invited | B．to have invited |
| C．having been invited | D．having invited |
The man insisted __________ a taxi for me even though I told him I lived nearby.
| A．find | B．to find |
| C．on finding | D．in finding |
Isn't it time you got down to __________ the papers?
| A．mark | B．be marked |
| C．being marked | D．marking |
In some parts of London, missing a bus means __________ for another hour.
| A．waiting | B．to wait |
| C．wait | D．to be waiting |
You can't imagine what great trouble they have __________ the problem __________.
| A．to solve; being talked about | B．solving; discussing |
| C．to solve; to talk about | D．solving; being discussed |