______ leaves the room last ought to make sure that the windows are closed and the door locked.

What a beautiful dress you are wearing! It must be expensive. —No. It only ____ me fifty yuan.

Could you tell me what he said just now? — Sorry, I_____ what was happening outside.

Where is my pen ? Have you seen ____?— Oh, sorry. I have taken ____ by mistake.

Jack is a boy, ______ last name is Brown.