It is on September 1st students go back to school every year. A. when B. who C. that D. what
2022-12-06 23:47:38 46次 2013-2014学年云南省高一上学期期中考试英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
It is on September 1st
students go back to school every year.
A. when B.
who C.
that D. what
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