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题目内容
（河南工业大学-学位英语考试辅导课程）
(单选题) Not until Mr. Smith came to China _____ what kind of country she is from.(本题2.5分)
A、 he knew
B、 he didn.t know
C、 did he know
D、 he couldn.t know
A、 he knew
B、 he didn.t know
C、 did he know
D、 he couldn.t know
参考答案
