．— I don’t think we have met before.
— Yes, once at a party, but we _______.
| A．didn’t introduce | B．weren’t introduced |
| C．haven’t introduced | D．weren’t introducing |
The principal walked onto the platform and seated himself in a chair, ____ for answering questions.
| A．prepared | B．being prepared | C．prepared | D．preparing |
To get as much firsthand information as possible, inspectors will hold workshops and distribute questionnaires, ____?
| A．won't they | B．won't it | C．aren't they | D．isn't it |
That truck nearly hit me; I ______.
| A．might be killed | B．may been killed |
| C．may be killed | D．might have been killed |
As we are in no hurry, let’s discuss the matter ____ tea and cake.
| A．at | B．over | C．with | D．by |
It is easy to be grateful for the good things, ______ a life of rich fulfillment comes to those who are also thankful for the setbacks.
| A．that | B．which | C．while | D．when |