She wants to learn more about American history．She is thirsty________such knowledge．
| A．at |
| B．of |
| C．for |
| D．with |
Before you go to Canada, you need to learn more it.
| A．from | B．in | C．by | D．about |
Earthquakes always happen , so it is difficult to know when they come.
| A．hopefully | B．suddenly | C．usually | D．luckily |
It’s every policeman’s dream to keep people and the traffic in good order.
| A．safe | B．healthy | C．busy | D．famous |
We all find _________ important to do what the teachers tell us.
| A．that | B．this | C．it | D．them |
Don’t__________your dream. I’m sure your dream will come true one day.
| A．take off | B．come up with | C．take up | D．give up |