Polar bears live mostly on_______sea ice,which they use as_______platform for hunting seals.
| A．a;a | B．a;the |
| C．不填;a | D．the;不填 |
----Do you mind if I record your lecture?
----_______. Go ahead.
| A．Never mind | B．No way | C．Not at all | D．No. You’d better not |
I can’t stand _______ with Jane in the same office. She just refuses _______ talking while she works.
| A．working; stopping | B．to work; stopping |
| C．working; to stop | D．to work; to stop |
The _____ on her face suggests that she didn’t pass the driving test.
| A．appearance | B．impression | C．attitude | D．expression |
It took me quite a long time to develop a voice, and _______ I have it, I am not going to be silent.
| A．now that | B．unless | C．so that | D．although |
With Chang'e-3 successfully landing, China becomes the third country in the world that _______ on the moon.
| A．lands | B．has landed | C．landed | D．was landing |