The bridge is made _________steel, ______ it?
| A．off; is | B．from; isn’t |
| C．in; is | D．of; isn’t |
sweet music!
| A．What an | B．How | C．What | D．What a |
________ useful advice you gave us!
| A．How a | B．What an | C．What | D．How |
Don’t open your books, _______?
| A．will you | B．won’t you |
| C．do you | D．don’t you |
_____, please! Let’s begin our lesson.
| A．Be quiet | B．Be noisy |
| C．Don’t be quiet | D．Noisy |
— Please ________ late for school.
— Sorry, I ________.
| A．isn’t; don’t | B．aren’t; won’t |
| C．don’t be; won’t | D．not be; don’t |