When ____ to compare the education system of China and Britain, the professor ga
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When ____ to compare the education system of China and Britain, the professor gave no answer.A.ask | B.asking | C.asked | D.to ask |
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答案
C |
解析
试题分析:连词状语从句的省略。本题在when后面省略了the professor was;句意:当这位教授被请求比较中国和英国的教育体系的时候,他没有给出答案。当状语从句的主语和主句主语一致,且含有be动词的时候,可以把状语从句的主语和be动词一起省略。故C正确。 点评:当状语从句的主语与主句的主语一致,且状语从句中有系动词be的时候,可以把状语从句的主语和be动词一起省略。如果状语从句中有it is的时候,it is 也可以省略。 |
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