I made a phone call to you without an answer last night,you

学习时间:2026-10-10 02:07:18 阅读：4929

I made a phone call to you without an answer last night,you _____ out at that moment.A) might be B) must have been C) must be D) were

曾经的棉花糖

2026-10-10 02:07:18

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must be一定；一定要；肯定是-might be：可能是可能是must have been一定（对过去事实肯定的推测）were 是因此只能是B,表示对昨天他不在的这个事实的推测。