—Have you known Dr. Jackson for a long time?
—Yes, since she________ the Chinese Society.
| A．has joined | B．joins | C．had joined | D．joined |
Seeing the big crowd coming towards him, he started to run down the hill, but ______ and went down on his hands and knees in the melting snow.
| A．slipped | B．skied | C．signalled | D．sank |
When Richard said, “You are much more agreeable and prettier now,” Joan’s face turned red at the unexpected ______.
| A．command | B．comparison |
| C．compliment | D．contribution |
Her ______ for writing was a desire for women to get the right to higher education.
| A．motivation | B．qualification |
| C．talent | D．technique |
If we go on using energy so wastefully, __________ are that our oil wells will be dried up before new energy sources can be found to replace oil.
| A．chances | B．opportunities |
| C．questions | D．problems |
All these documents must be the university you are applying for before December,.
| A．donated to | B．sent in |
| C．submitted to | D．handed in |