______he come late, give him the message.A、HadB、ShouldC、WouldD、IfBshould he

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问题 ______he come late, give him the message.

选项 A、Had
B、Should
C、Would
D、If

答案 B

解析 should he come late相当于if he should come late，条件状语从句是虚拟语气的情况下，主句可用祈使语气；但是，祈使语气不可以与had done的条件状语从句连用，故排除A项；C项和D项不符合语法，故应选B项Should。

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______hecomelate,givehimthemessage.A、HadB、ShouldC、WouldD、IfBshouldhe