She _______ have left her keys at home. I saw her pick them up earlier.

You _______ have finished your homework before coming to the party.

He _______ have gone to the store, but I’m not sure.

They _______ have been sleeping when the phone rang. I didn’t hear anything.

She _______ have helped him with the project. He seemed to manage it alone.

She must have taken the wrong bus; I saw her leave earlier.

He could have been at the meeting, but he didn’t show up.

They may have gone to the movies, but they didn’t tell anyone.

He must have _____ the train because he was late to the station.

You could _____ told me about the problem earlier, so I could help you.