Some people are afraid that ______ air pollution may cause changes in weather around the world.
| A．a | B．不填 | C．an | D．the |
It was reported that China's first moon car “Yutu" landed on the moon successfully _______December 14, 2013.
A．in B．on C．at
---What do you think of A Bite of China on CCTV?
---It's one of _______ best programs that I've ever seen.
A．a B．the C．／
I got up early this morning so that I can catch up the first bus to the train station.
| A．in order that | B．in order to |
| C．unless | D．whether |
There is little time left. Could you run your eyes over my report quickly?
| A．look through | B．look at |
| C．look for | D．look out |
I was just a small potato in the company, so few people noticed me.
| A．not young | B．not tall |
| C．not old enough | D．not important |