The problems, _____ properly, will seriously affect the relations of nations. A. not solved B. if no...
2023-02-04 23:04:58 32次 20102011年度河北省高三第二学期第一次调研英语卷 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
The problems, _____ properly,
will seriously affect the relations of nations.
A. not solved
B. if not solving C. if not
solved D. if not to solve
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