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    【题目】At the age of 14, Father had to leave school and start working. There would be no one to support the family _______ he not worked.

    A. did B. has C. had D. was

    【答案】C

    【解析】

    试题分析：考查动词时态。句意：14岁时，父亲不得不离开学校，开始工作。要是他不工作的话，就没有人来养活这个家庭了。此处是if引导的非真实条件句，与过去事实相反，当把if省略时则把助动词had/should情态动词were提到主语前面。故选C。

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