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为什么不用had served?His brother who served in the army for 8 years is no working for MIcrosoft.

题目详情
为什么不用had served?His brother who served in the army for 8 years is no working for MIcrosoft.
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答案和解析
因为有is no working for MIcrosoft
要是没有这句,就是has served