Measures must be taken before there is another collapse of the coal mine, ______?
| A．must they | B．mustn’t they | C．is there | D．isn’t there |
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16．In no place of China_______little about the economic development nowadays.
| A．the local government cares | B．does the local government care |
| C．doesn't the local government care | D．cares the local government |
15．－Tom, you've got an A in the final English exam. Congratulations!
－Thanks. But I never thought the result would come out so fast. The papers_____when I left the teacher's office just now.
| A．were marking | B．were marked |
| C．were being marked | D．had been marked |
14．This is our contribution to______world of the 21st century, world of independence and mutual understanding.
| A．a; a | B．the; the | C．a; the | D．the; a |
13．－Where will you start your work after graduation?
－Mum, it's not been decided yet. I_______continue my study for a higher degree.
| A．can | B．must | C．would | D．Might |
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