题目内容
My brother the army when he was 18 years old. He ________the army for two years.
A.has joined; has been in B.joined; has joined C.joined; has been in
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题目内容
My brother the army when he was 18 years old. He ________the army for two years.
A.has joined; has been in B.joined; has joined C.joined; has been in