Question

【题目】Our classroom is ____ clean ____ it was yesterday.
A.too; as
B.so; as
C.not as; as
D.much; than

Answer 1

【答案】C
【解析】句意：我们的教室不如昨天的干净。not as/so...as…意为“和……比不如……”；so……as不用于肯定句；as……as即可用于肯定也可用于否定。AD均为错误结构。所以答案是C。