12．On Oct. 23 , 2008 there was the 6oth sports meet, _____our students took an active part in.
| A．what | B．which | C．who | D．Where |
Has it been warned that all the children in this area stay at their homes until the Flu has been controlled ?
| A．can | B．will | C．may | D．shall |
_________ smoking, he would not have got cancer in the lung.
| A．Was he given up | B．Had he given up |
| C．Did he give | D．If he gave up |
---“What do you think of the service here?”
---“Oh, _________ . We couldn’t have found a better place.”
| A．too bad | B．sorry | C．wonderful | D．impossible |
Modern forms of transportation and communication have done much to ______ the isolation（隔离）of life in Alaska.
| A．break down | B．break out |
| C．break into | D．break through |
If you don’t try your best to learn all subjects, you will ___ behind.
| A．stay | B．leave | C．fall | D．remain |