题目

In such a fierce competition, a person has to make every effort if he ______ . A. has succeeded      B. is to succeed      C. would succeed       D. will succeed 答案：B 解析: 句意：在如此激烈的竞争下，一个人要想成功，就必须竭尽全略。If条件句中可用be to结构表示按事态发展，最终会……，或注定会……。

查看本题答案和解析