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In such a fierce competition,a person has to make every effo

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In such a fierce competition,a person has to make every effort if he_______.
A.has succeeded
B.would succeed
C.will succeed
D.is to succeed
In such a fierce competition,a person has to make every effo
答案D
试题分析:考查be to do用法.be to do sth表示一定要做某事;必须坐某事;if引导条件状语从句,句子里使用一般现在时代替将来时.句意:在如此激烈的竞争中,如果一个人要成功,他不得不非常努力.故D正确.
考点:考查be to do 用法
点评:be to do sth是高中一个非常重要的结构,可以表示将来时,也可以表示一定要做某事;必定要做某事;在具体使用中要加以辨析.