It is as difficult to persuade him not to smoke ______ to keep me from singing s

游客2023-09-28  18

问题 It is as difficult to persuade him not to smoke ______ to keep me from singing songs.

选项 A、so is it
B、so it is
C、as it is
D、as is it

答案 C

解析 比较级。形容词和副词的原级比较常用在"as+原级+as"或否定式"not+as…as"或"not+so…as"结构中。as it is 之后省略了difficult。[例句] The temperature is as high today as it was yesterday.今天的温度和昨天一样高。
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