. Professor Smith and Professor Brown will _____ in giving the class lectures.
| A．exchange | B．alter | C．shift | D．alternate |
____ wide spread of H1N1 is _____ challenge for the whole world. Confidence, cooperation and responsibility are keys to overcoming it.
| A．A; the | B．A; a | C．The; the | D．The; a |
Jack is good, hard-working and intelligent. _____, I can’t speak too highly of him.
| A．As a result | B．In a word | C．In other words | D．Above all |
—I wonder if you have a double room for tonight.
-—________.
—OK, thanks anyway.
| A．One moment, please. I’ll see if there are any for tonight. |
| B．Sure. Please fill out this form for us. |
| C．Sorry. I’m afraid we have no one at this time |
| D．How long are you planning to stay here, sir? |
So little ________that the neighbors could not settle their difference .
| A．agreed they | B．they agreed | C．they did agree | D．did they agree |
An actor can not well play the role without life experience ____ more than a dancer can make a difference without much practice.
| A．any | B．no | C．not | D．much |