Modal Perfects

They must have arrived late. They ………………………..arrived early.

I shouldn't have refused the invitation. I ………………………….accepted the invitation.

You can't have switched the TV off. You ……………………..left the TV on.

He can't have been at home. He …………………………...out.

My computer isn't working. I'm not sure why, but I ………………….. downloaded some malware when I clicked on that link.

The pilot might not have died in the accident. The pilot ………………………..survived the accident.

He …………………. sent this message. He hasn't got a phone.

They couldn't have stolen the car during the day. They ………………………….. stolen the car at night.

I...…………….. used my GPS. This map is really old and now I'm completely lost.