It’s a rule in our school that the classroom _________ every day.A.should clean B.should be cleaned C.should cleaned D.should be cleaning.A.should clean B.should be cleaned C.should cleaned D.should be cleaning
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It’s a rule in our school that the classroom _________ every day.A.should clean B.should be cleaned C.should cleaned D.should be cleaning.A.should clean B.should be cleaned C.should cleaned D.should be cleaning
It’s a rule in our school that the classroom _________ every day.
A.should clean B.should be cleaned C.should cleaned D.should be cleaning
.A.should clean B.should be cleaned C.should cleaned D.should be cleaning
It’s a rule in our school that the classroom _________ every day.A.should clean B.should be cleaned C.should cleaned D.should be cleaning.A.should clean B.should be cleaned C.should cleaned D.should be cleaning
选择B
其中should可以省略,直接填be cleaned也可以.
这是表示规则,命令的用法,除了用名词rule,requirement,order等,也可以用动词require等.
如:We are required that the classroom (should) be clean every day.
至于被动语态,因为classroom作主语.就不多加解释了.
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B
教室是被打扫,用被动语态
B
B (passive voice)
A之所以不对是因为它是active voice
C should後面的动词用原型
D 放进句子中根本就不符句意
b吧
choose B