题目内容
It was not until dark ________ he found ________ he though was the correct way to solve the problem.
A. that; what B. that; that
C. when; what D. when; that
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题目内容
It was not until dark ________ he found ________ he though was the correct way to solve the problem.
A. that; what B. that; that
C. when; what D. when; that