Apart from the urgent problems by wars and conflicts, the UN helps countries with other problems such as lack of education ,lack of food , poverty ,disasters and disease. A．to causeB．having been cau 题目和参考答案——青夏教育精英家教网—

题目内容

Apart from the urgent problems _____________by wars and conflicts, the UN helps countries with other problems such as lack of education ,lack of food , poverty ,disasters and disease.

A．to cause

B．having been caused

C．caused

D．having caused

略

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