The price of houses increases very fast now, because more _____ want to buy them.
Why are you mad at me, John?
Mary told me to wait for her at the school gate, but she didn’t appear at all.
This is the best present that I have received.
She is sad. Why don’t you cheer her up?
--- I don’t know when ______ tomorrow.--- I will call you as soon as he ______.