题目内容：
He was told he could join the army when he ________ old enough.
A．would be B．should be
C．was
D．were
参考答案：
答案解析：
单选题：He was told he could join the army when he ________ old eno
- 题目分类：英语
- 题目类型：单选题
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B．should be
C．was
D．were