Cars play an important role in modern life, but they ______ also cause many problems like air pollut...
2023-01-13 01:38:28 99次 2011-2012学年福建省高三11月学段考试英语题 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
Cars play an important role in
modern life, but they ______ also cause many problems like air pollution.
A.
should B.
can C.
must D.
will
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