6、are+done如:TeaisgrowninHangzhou.杭州种植茶叶Theroomeveryday.Youcanliveinnow.A.cleansB.iscleaningC.iscleanedD.hascleaned【解析】根据句意“房间每天都打扫,你现在可以居住了”,可知,房间是每天被打扫,所以要用一般时态的被动语态,所以选择答案C。巩固练习:一、单项选择()1.Usuallycomputers_____________tosearchtheInternet.A.use B.areusing C