问题标题:
改写被动语态1.Theyoungpeoplewerebusyplantingtreesthewholeafternoon.
问题描述:
改写被动语态1.Theyoungpeoplewerebusyplantingtreesthewholeafternoon.
彭成回答:
treeshadbeenplanted(bytheyoungpeople)forthewholeafternoon
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