There are over 58,000 rocky objects in_____ space，about 900 of which could fall down onto ______ earth．
| A．the；the | B．不填；the | C．the；不填 | D．a；the |
— Could I use your bike for today, Sam?
— _________. I’m not using it.
| A．I have no idea | B．No, you can’t | C．Sure, go ahead | D．Never mind |
— Who’s that man over there standing in the garden? Is it Mr. White?
—It __________ be him. He has gone to Shanghai on business.
| A．shouldn’t | B．may | C．can’t | D．must |
— ______ does your English teacher live, Michael?
— About 30 minutes’ drive, so he gets up early every day.
| A．How far | B．How long | C．How many | D．How often |
— Your aunt often walks the dog in the morning.
— Yeah, bad weather stops her.
| A．when | B．unless | C．because | D．since |
— Mr. Smith joined in different activities in Beijing. Do you know ___________?
— Since 5 years ago.
| A．when he went there | B．how long he has stayed there |
| C．how soon he will come back | D．when he will come here |