I think you should be about giving your address to strangers. It might be dangerous.
| A．confident | B．cautious | C．scientific | D．positive |
I was so familiar with him that I recognized his voice _____ I picked up the phone .
| A．while | B．after |
| C．in case | D．the instant |
It sounds like something is wrong with the car’s engine.______, we’d better take it to the garage immediately.
| A．Otherwise | B．If not |
| C．But for that | D．If so |
The latest wave of smog(雾霾) ,_____ first swept into Shanghai and Jiangsu province on Dec. 1st ,_______ at least four car accidents due to low visibility.
| A．in which; cause | B．where ; caused |
| C．which ; has caused | D．that; is caused |
As the pressure was too heavy, the local government had to _____cost of office to deal with the economic crisis (危机).
| A．cut up | B．cut out |
| C．cut down | D．cut in |
________fire, all exits must be kept clear.
| A．In place of | B．Instead of |
| C．In case of | D．In spite of |