How long does a snake sleep? It ______ for eighteen ______ a day. A. sleep , hour B. sleeps , hours C. slept , hours
—Could you tell me __ ? —Yes, it will start at ten.
_____ we plant, ______ our city will be .
We don’t have enough nurses to look after the patients. At least______ are needed.
—Don’t play with the knife, ______ you’ll cut your hand.—Sorry, I _____.
This is __ song I’ve told you about . Isn’t it __ beautiful one?