The president is talking on ____ phone with astronauts in ____ space.
| A．不填；the | B．the; the | C．the; 不填 | D．不填；不填 |
It’s important to listen to your teacher carefully in class, so try not to let your mind _________.
| A．lose | B．stop | C．wander | D．disturb |
－Do you mind if I turn off the TV?－__________.
| A．Yes, please | B．No, go ahead | C．Yes, you can | D．No, I’d rather you didn’t |
Jennifer, who is my best friend, said she would go abroad for further education __________.
| A．before long | B．long before | C．shortly after | D．very fast |
A good teacher should leave some time for the students to _________ the knowledge.
| A．introduce | B．receive | C．digest | D．accept |
There is no doubt that a small child has to learn to keep its _________ before it can walk far.
| A．strength | B．peace | C．energy | D．balance |