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He ________ the army for ten years.

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He ________ the army for ten years.
A.has joined B.has joined in C.joined D.has been in
for ten years,表示持续时间,因此这个完成语态要选用持续性动作或者状态的谓语动词.
join是短暂性动作,be是持续性动词,所以选d.
如果用join,应该这样表达：He joined the army ten years ago.
He ________ the army for ten years. He has joined the army for ten years.和 He has been in the ar He has ______(join) the army for ten years and is now an off It is ten years since he ____(join) the army It was ten years ago ___ he joined the army It _____ ten years since he left the army. It _____ ten years since he left the army . Li Hong has ________ the army for 2 years. 1.Li Hong has ________ the army for 2 years. he joined the army 3 years ago he__ ___the army for 3 years. he has been in the army for five years He joined the army for five years（改错）