语法:Not until Mr Smith came to China ___ what kind of a country she is.

语法:Not until Mr Smith came to China ___ what kind of a country she is.

题目
语法:Not until Mr Smith came to China ___ what kind of a country she is.
A.he didn't know B.he knew C.did he know D.he could know
答案
选C.Not until Mr Smith came to China置于句首,主句要倒装.
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