单选题
Not until Mr. Smith came to China ______ what kind of country she is.
A、
he knew
B、
he didn't know
C、
did he know
D、
he couldn't know
【正确答案】
C
【答案解析】
倒装句。not until用于句首,通常要倒装。故C为正确答案。句意:直到史密斯到达中国,他才知道中国是一个什么样的国家。
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