应该填 has passed
如果是时间作主语的话,不管是多长时间都看做是整体
Three years ____ ____ since he joined the army 填have passed ,have不对,passed对的.
Three years ____ ____ since he joined the army 填have passed ,have不对,passed对的.
英语人气：226 ℃时间：2019-08-19 14:35:42
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