问题补充:
At first, I didn’t know what Facebook was, and now I do know what it is. I have to say, it sounds like huge waste of time.
A. /, the
B. /,a
C. the, a
D. a, the
答案:
A. /, the
(答案→)B. /,a
C. the, a
D. a, the
解析:考查冠词:句意:一开始,我不知道Facebook是什么,现在我知道它是怎么回事了,我不得不说,这听起来象浪费时间。第一空Facebook前面不加冠词,第二空是词组a waste of time浪费时间,选B。