Whose hat is this? — I think it can’t be John’s or Kate’s. It’s much too small for __________.

Just before the Chinese class, I suddenly realized that I forgot _______ my Chinese text book.

He was so tired that he fell asleep ___he went to bed.[ ]

You should ____________ your hands if you have any problems.

Tony, I am going to get married next month. —– _______________!