— May we go home mow ?
— No, you____. You____ to go home until5 o’clock.
| A．mustn’t; are allowed | B．don’t have to; are supposed |
| C．needn’t; aren’t allowed | D．can’t; aren't supposed |
Would you mind _________ down the music? The baby is sleeping.
| A．turn | B．turning | C．to turn | D．turned |
－Excuse me. Could you tell me _________?
－Sure. I bought them in a video shop on River Road.
| A．where you buy the CDs |
| B．where you bought the CDs |
| C．how you buy the CDs |
| D．how you bought the CDs |
—Are you going to help John with his Chinese this evening?
—No, He _______ to England. He will be back here next month.
| A．returned | B．will return |
| C．returns | D．has returned |
Haze （雾霾）appears around us. Let’s do ________ helpful to protect the environment.
| A．nothing | B．something |
| C．anything | D．a thing |
Nancy quickly ________ the door and put down her school things.
| A．opens | B．opened |
| C．has opened | D．is opening |