Mary and I have been close friends ______ we met each other 10 years ago.
| A．when | B．since | C．until | D．as |
Although it is not our normal _____ to give credit, this time I think we should consider the matter more closely.
| A．state | B．intention | C．occasion | D．practice |
It has been many years since I was last in London_______I still remember something that happened during that visit.
| A．and | B．for | C．but | D．as |
And video cameras can be used to_______people’s actions at home.
| A．keep | B．make | C．record | D．watch |
Soon I heard a_______like that of a door burst inand then a climb of feet.
| A．sound | B．cry | C．voice | D．shout |
Driving a car without insurance can have _____ consequences.
| A．uncertain | B．disastrous | C．potential | D．unworthy |