.At the beginning of class, the noise of desks ____ could be heard outside the classroom.
| A．opened and closed | B．to be opened and closed |
| C．being opened and closed | D．to open and close |
A short man appeared suddenly in the doorway, and Dave had to pull up __________ so as to avoid bumping into him．
| A．merely | B．sharply | C．shortly | D．desperately |
There is nothing worse than putting in the effort to plan and prepare for a trip only to arrive at a ____ hotel with disgusting service．
| A．ridiculous | B．shabby |
| C．comfortable | D．convenient |
I am ______ about the new model, and I firmly believe that there will be a good market for it.
| A．concerned | B．doubtful | C．confident | D．particular |
You had better ______some time every day for sports so that you can keep yourself energetic.
| A．set aside | B．take up |
| C．put away | D．give out |
We wanted to get home before dark, but it didn’t quite ________ as planned.
| A．make out | B．turn out | C．go on | D．come up |