
How long has your brother ___ the army? A.joined B.taken part in C.been D.served i
Howlonghasyourbrother___thearmy?A.joinedB.takenpartinC.beenD.servedin...
How long has your brother ___ the army? A.joined B.taken part in C.been D.served in
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D |
join和 take part in是短暂性的动词,不用在完成时态中,C选项没有介词,后面不能接the army,只能说成是has been a soldier,所以选D选项。 |
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