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    精英家教网 > 高中英语 > 题目详情
    — Why do you do volunteer work in the North-West?
    — I_______ to improve the lives of the children there through my efforts.
    A．was tryingB．have triedC．am tryingD．tried
    C

    试题分析：考查时态。句意：--你为什么选择去西北地区做志愿服务？--通过我的努力，我正在努力改善那里孩子们的生活。过去进行时用来指过去的某个时刻正在发生的事情，根据第一句中的Why do you...可知，这里不用过去的时态，排除A、D；现在完成时表示发生在过去的事情对现在造成的结果，参加志愿服务这件事并未结束，因此不用现在完成时，故选C。
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