题目内容：
It was 10 o′clock ___________ Jill arrived at the office, which made the boss annoyed.
A.when
B.that
C.which
D.then
参考答案：【答案仅供学习，请勿对照自行用药等】
答案解析：
选择题：It was 10 o′clock ___________ Jill arrived at the office, which made the boss an
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- 题目类型：选择题
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