Complete the sentences using might not have ... or couldn't have....
1. A: Do you think Sarah got the message we left her?
B: No, she would have contacted us.
She couldn't have gotten it.
2. A: I was surprised Kate wasn't at the meeting. Perhaps she didn't know about it.
B: That's possible. She might not have known about it.
3. A: I wonder why they never replied to our letter. Do you think they received it?
B: Maybe not. They
4. A: I wonder how the fire started. Was it an accident?
B: No, the police say it co
5. A: Mike says he needs to see you. He tried to find
B: Well, he
very hard. I was in my office all day.
you yesterday.
6. A: The man you spoke to - are you sure he was Chinese?
B: No, I'm not sure. He
