The key______ the problem of traffic jams is to pay the “ congestion charge” ______ by the mayor of London.
| A．to solving; introducing |
| B．to solve; introducing |
| C．to solving; introduced |
| D．to solve; introduced |
_______ you can finish the task on time, it doesn’t matter how you do it.
| A．so long as | B．as soon as | C．as well as | D．so far as |
Many residents are supposed to ____ the motorway. It is not a wise decision.
| A．build | B．building | C．be building | D．have built |
When paying for a taxi, he never looks at his wallet –just takes out one note ____ and hands it over.
| A．by accident | B．on occasion | C．at random | D．on average |
The teacher made____ her duty to care for the lives and study of her students.
| A．one | B．that | C．it | D．this |
Anny was banned ______ driving for two years because of a serious accident caused by drinking and driving.
| A．against | B．from | C．in | D．to |