首页 > 中学英语试题 > 题目详情
—I called you at 9 last night，but no one answered. —Sorry，I ________ sleeping.I went to bed very ear...
题目内容：
—I called you at 9 last night，but no one answered.
—Sorry，I ________ sleeping.I went to bed very early.
A．need have been B．would have been
C．must have been D．should have been
本题链接：