If
being carried
out successfully, the plan will completely change the traffic conditions in the city.
A、
carried
B、
is carried
C、
having been carried
D、
to carry
【正确答案】
A
【答案解析】
解析:结构应用。本句考察的是省略的用法:当状语从句的主语和主句的主语相同时,状语从句可以用分词短语作状语。本句完整的句子应为“if it is carried out successfully…”,变成省略句时,直接用“if+过去分词",因此A为答案。
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