---My pen is missing. I can’t find it anywhere.---I’m afraid you have to buy _________.

Don’t just wait for other’s help. God help those who help             . 

He found _________important to protect wild birds.

 The cinema in our neighborhood is old and small, but ________ is big and modern.

--- What’s wrong with my son, doctor? --- ____________ serious, just a slight cold. He’d better drink some water.