It is necessary that we______have a good command of English at college.A、mustB、

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问题 It is necessary that we______have a good command of English at college.

选项 A、must
B、have to
C、should
D、ought to

答案 C

解析本题考查虚拟语气的用法。It is necessary／important that．．．“做…是必要(重要)的”，从句中用虚拟语气，其构成是should+动词原形，should可省。句意为：我们在大学时期掌握好英语是必要的。

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