Don’t ______ others when they make mistakes.
—Must I finish my homework at once? — No, you ______. A. needn’t B. mustn’t C. won’t
You ______ wash your hands before meals. It is good for your health. A. may B. can C. must
It’s hot here. Please keep the windows _ A. closing B. open C. closed
Sally sings pretty _______ and she is also _______ at dancing. A. well; well B. good; good C. well; good
The summer holiday is coming. We’re going to have _______ holiday. A. a two-months B. a two-month C. two months