—I think the man over there must be Bob.
-- It _______ be him. He has ______ to Australia.
| A．can’t, gone | B．can’t, been | C．may not, been | D．mustn’t, gone |
Many students said that they were willing to work hard to make their dreams ________true.
A．come B．came C．comes
—________a volunteer is great.
—I think so.Some of us want ________volunteers for the London Olympics.
| A．Being；being | B．To be；being |
| C．Being；to be | D．To be；to be |
While we were running on the playground, Jack suddenly stopped ________and lay on the ground，so we all stopped ________what was wrong with him.
A．to run；to see
B．running；seeing
C．running；to see
You had better ________because you have to drive back home.
| A．not drinking | B．not drink |
| C．don't drink | D．not to drink |
As we all know，it's not polite to keep others ________for a long time.
| A．wait | B．waited |
| C．to wait | D．waiting |