—What are you busy with?
—The conference in our city next week．
| A．held | B．will be held | C．being held | D．to be held |
The gravity on the earth is much ______ that on the moon, do you know why?
| A．as strong as | B．strong than | C．so strong than | D．stronger than |
_____ by a black hole, Li Yanping was so frightened at first, but he calmed down later and
tried his best to escape.
| A．Caught | B．Catching | C．To catch | D．Catch |
Mary has______ speaking dialects, so it is not surprising to see her communicate with the
people from different parts of this country easily.
| A．a gift for | B．trouble in | C．effects on | D．nothing to do with |
We don’t have to ________ every word that we don’t know when reading.
| A．look up | B．refer to | C．look for | D．look into |
We’ll discuss the problem ________ lunch time.
| A．at | B．over | C．of | D．when |