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【Itisrequiredthateverystudent_aforeignlanguagebeforegoingabroad.A.learnB.learnsC.willlearnD.shouldhavelearnt为啥?】
题目内容：
It is required that every student _ a foreign language before going abroad.
A.learn
B.learns
C.will learn
D.should have learnt
为啥?优质解答
是虚拟语气
require的从句中用should do表示虚拟
should可以省略
所以用动词原形
A.learn
B.learns
C.will learn
D.should have learnt
为啥?
优质解答
require的从句中用should do表示虚拟
should可以省略
所以用动词原形
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