当前位置：We__________have prove
单选题 We__________have proved great adventurers, but we have done the greatest march ever made in the past ten years.
A.needn' t
B.may not
C.shouldn' t
D.mustn' t
正确答案： B
答案解析: 本题考查情态动词一 句意：我们也许没有被证明是伟大的探险家，不过我们的前进是过去十年来最伟大的。“may not+现在完成时”表示“也许没有”，用于对过去或已经发生的事进行猜测。“needn’t+现在完成时”表示“本来没有必要”，表示过去不需要做某事：“shouldn’t+现在完成时”表示“本来不应该做而做了某事”。mustn’t不与现在完成时连用，只与动词原形连用，表示“禁止，不要”。
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