— Why do you do volunteer work in the North-West?
— I_______ to improve the lives of the children there through my efforts.
| A．was trying | B．have tried | C．am trying | D．tried |
相关试题
When you learn a foreign language, ________you must forget your own one.
| A．above all | B．after all | C．in all | D．at all |
Mark ______ a basketball game in the stadium that _______ 5000 people.
| A．holds; is holding | B．is holding; holds |
| C．holds; holds | D．is holding; is holding |
The conference has been held to discuss the effects of tourism ______ the wildlife in 
the area.
| A．in | B．on | C．at | D．with |
Our son doesn’t know what to _____ at the university; he can’t make up his mind about his future.
| A．take in | B．take up | C．take over | D．take after |
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