题目内容：
It was not until he arrived in class _____ realized he had forgotten his book. (A) when he
(B) that he
(C) and he
(D) he
参考答案：
选择题：It was not until he arrived in class _____ realize
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- 题目类型：选择题
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(A) when he
(B) that he
(C) and he
(D) he