---There is somebody knocking at the door. Who________ it be?
---I’m not sure. It ________ be a postman.
| A．may; must | B．will; can | C．can; may | D．may; will |
I don’t know ______ a show. Can you tell me?
| A．how organize | B．what organize | C．what to organize | D．how to organize |
---It is selfless ______ the doctor to devote all the time he had ________ for the patients.
--I think so, they are so great.
| A．for; to care | B．of; to care | C．of; to caring | D．for; to caring |
I agree with most of what you said, but I can’t agree with ______.
| A．something | B．anything | C．everything | D．nothing |
--- Sharon, remember to lock the door before leaving the house.
-- ______.
| A．Yes, please | B．OK. I will | C．It’s hard to say | D．It’s my duty |
______ exciting sport it is to climb the mountains!
| A．How | B．What | C．What a | D．What an |