—Must I clean the classroom now?—No, you_______.A. mustn’t B. can’t C. needn’t
It’s important ______ us ________ some good books.
Staying up late is _______ your health.
You’d better ________ too much meat. You are too fat.
My mother often tells me _______ my classmates when they need.
—Must I take the medicine every day? — No, you______.