______ you have known everything about it, it is unnecessary for me to talk about it again.
| A．As soon as | B．Now that | C．Although | D．While |
I watch sports the way a dog will watch TV: I’ m attracted by the motion and color, but no actual comprehension _____.
| A．take place | B．took place |
| C．had taken palce | D．is taking place |
We _____ know things about each other that we should not know, have no right _____, and have a right, actually, not to know.
| A．increasingly; to know | B．decreasedly; knowing |
| C．increasingly; know | D．decreasingly; knew |
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 |
----Mr. Johnson, would you have some more ice-cream?
----No, thanks. It’s very good, but I have to _____ my weight, you know.
| A．remain | B．notice | C．watch | D．care |
How can you expect him to make any improvement ________ you never give him an opportunity to have a try?
| A．unless | B．when | C．until | D．while |