问题补充:
— Your classroom looks bright and tidy.
— It after school every day.
A. cleans
B. cleaned
C. is cleaned
D. was cleaned
答案:
A. cleans
B. cleaned
(答案→)C. is cleaned
D. was cleaned
解析:考查情景交际和被动语态。“你们的教室看起来既明亮又整洁。”“它每天放学都被打扫。”被动语态的构成是am/is/are done sth.,every day“每天”,常与一般现在时连用。故被动语态用is。故选C。