Listen to the two girls by the window. What language _____?
| A．did they speak | B．were they speaking |
| C．are they speaking | D．have they been speaking |
.Mary takes great ____ in learning pop music.
| A．delight | B．happy | C．joy | D．fond |
The computer system ____ suddenly while he was searching for information on the Internet.
| A．broke out | B．broke down | C．broke up | D．broke in |
Many students joined in the ____ race in the sports meeting to be held next week.
| A．800-meter-long | B．800-meters-long | C．800 meter long | D．800 meters length |
___ and out of breath, we reached the top of the mountain and stopped ____ the beautiful scenery.
| A．Tiring, to admire | B．Being tired, admiring | C．Tired, to admire | D．Tired, admiring |