问题补充:
— The classroom is clean it was yesterday.
— Sorry, I forgot to clean it.
A. as; as
B. so; as
C. not as; as
D. more; than
答案:
A. as; as
B. so; as
(答案→)C. not as; as
D. more; than
解析:as; as和……一样;so; as和……一样,一般用于否定句中;not as; as不如;more; than比……多。句意:教室不如昨天干净。——抱歉,我忘了打扫。结合语境可知选C。