How long do you think ____ the car factory launches a new model?
| A．will it be until | B．will it be when | C．it will be before | D．it will be that |
People are very _____ about the problems ____ the environment.
| A．concerning; concerned | B．concerning; concerning |
| C．concerned; concerned | D．concerned; concerning |
The headmaster decided to have a word with whoever is ______ this matter.
| A．responsible for | B．in the charge of |
| C．operated | D．connected for |
This injury could mean him ______ tomorrow’s 110-meter hurdles.
| A．to miss | B．missing |
| C．having missed | D．will miss |
_____ twice a year, whether it is a car or a bus, is a rule that every driver must obey in this city.
| A．Examining | B．Examined |
| C．To examine | D．Being examined |
John is very _______. If he promises to do something, he will do it.
| A．guilty | B．reliable |
| C．confident | D．cruel |