If a man _________ succeed he must work as hard as he can.A.

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If a man _________ succeed he must work as hard as he can.A.will B.should C.is to D.is going
要真确的..要理由急.

选B
这是一个条件状语从句,遵循主将从现原则,主句用情态动词must代替将来时,
从句要用一般现在时,而选项ACD均是将来时,所以从句if后面仍然以情态动词should来代替一般现在时
（我见到有人说虚拟语气的,首先这个不是虚拟语气,因为succeed虽然看起来像过去式,但是它是原形）
（选C也不对,因为be to do指的是立即将要发生,从语法结构,意思上都不对）

If a man _________ succeed he must work as hard as he can.A. If a man -------succeed,he must work as hard as he can.A.wil If a man ___ succeed ,he must work as hard as he can. 英语10．If a man _______ succeed,he must work as hard as he can 快的加分 If a man is to succeed,he must work as hard as he can 12.If the man _________ succeed,he must work as hard as he c 1、If the man _________ succeed,he must work as hard as he ca if a man _____succeed, he must work as hard as he can If a person____succeed,he must work as hard as he can. foolish as a person is,he can succeed in his work if he work My brother is going to work as hard as __ is next term.A he a man can do as he will but not will as he will