Although this sound like a simple task，great care is needed．
| A．must | B．may | C．shall | D．should |
I couldn’t _______.The line was busy.
| A．go by | B．go around |
| C．get in | D．get through |
It’s ten years since the scientist _______ on his life’s work of discovering the valuable chemical.
| A．made for | B．set out |
| C．took off | D．turned up |
This picture was taken a long time ago.I wonder if you can _______ my father.
| A．find out | B．pick out |
| C．look out | D．speak out |
A love marriage, however, does not necessarily _______ much sharing of interests and responsibilities.
| A．take over | B．result in |
| C．hold on | D．keep to |
Once in bed,I read for twenty minutes and then _______ the light.
| A．turned out | B．turned over |
| C．turned on | D．turned up |