Playing on a frozen sports field sounds like a lot of fun. Isn’t it rather risky, _______ ?
| A．though | B．also | C．either | D．Too |
The engine of the bus was _________，and the bad weather added to the worries of the passengers.
| A．in vain | B．in good condition | C．out of work | D．out of order |
In some of the war-torn countries temporary homes had to be put up quickly to ___________ the
homeless.
| A．take up | B．take in | C．keep up | D．keep out |
For some time the expert __________ people of the health risks caused by passive smoking. He says he won’t stop until all the smokers around him decide to quit smoking.
| A．is warned | B．is warning | C．has been warning | D．has been warned |
The news _______ Barack Obama won the Nobel Peace Prize is _______ surprised the world.
| A．that；what | B．which；that | C．that；which | D．/；how |
After inspecting the building, specialists discovered some faults that otherwise ___________.
| A．were overlooked | B．would be overlooked |
| C．had been overlooked | D．would have been overlooked |