题目内容
(太原五中2008—2009学年度第二学期月考 (2月), 25)It is vital that we _____ act out at once to protect the environment.
A. would B. should C. will D. can
B
解析:
It is vital/important/strange/necessary/natural…that 从句中,从句运用should跟动词原形。
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