In this school, ______ students work very hard, ______ they are very happy.
| A．although, / | B．although, but | C．/, although | D．but, although |
—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