____ 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 |
Alice is one of the students who I am sure always best in most difficult situations.
| A．do her | B．do their | C．does her | D．does their |
is known to us all is that America is a developed country _________the First World.
| A．Which; belonged | B．As; belonging to |
| C．What; belonging to | D．It; belonging |
—Your mother isn’t a doctor, is she?
----___________. She teaches English in a middle school.
| A．Yes, she is | B．Yes, she isn’t | C．No, she isn’t | D．No, she is |
---Can I pay the bill by check?
---Sorry, sir. But it is the management rules of our hotel that paymentbe made in cash.
| A．shall | B．need | C．will | D．can |
___ that the government can lead them out of the financial crisis, people are optimistic about the future of the country.
| A．Convincing | B．Convinced | C．To convince | D．Having convinced |