A lot of coal miners died on the job last year, ____ the local government to shut nearly 500 small mines in Shanxi Province alone.
| A．forcing | B．to force | C．forced | D．has forced |
50. When they met, they stopped and said hello to_______.
| A．each other | B．each another | C．the other each | D．each one |
51. After everyone took_______ place, the meeting began.
| A．his | B．their | C．there | D．the |
52. －Why don’t we take a little break?
－Didn’t we just have _______?
| A．it | B．that | C．one | D．this |
53. If you want to change for a double room you’ll have to pay ___$15.
| A．another | B．other | C．more | D．each |
54. We should always keep ______ well-informed of the changing information.
| A．us | B．ours | C．ourselves | D．we |