31. The cheering went on for quite some time _____ it died down and people took their seats again.
| A．Before | B．Since | C．As | D．When |
—Do you like classical music?
—________.I'm quite keen on jazz.
| A．It doesn't matter | B．My pleasure |
| C．Sure | D．Not really |
We have ______ the get-together until next weekend when we won’t be so busy.
| A．set off | B．put off | C．take off | D．set up |
I have always regretted ______ harder at school.
| A．not to study | B．to not study |
| C．having not studied | D．not having studied |
Your attention should be focused ______ your homework rather than TV programs.
| A．on | B．into | C．to | D．for |
Loving your children doesn’t mean ______ them whatever they want.
| A．give | B．giving | C．to give | D．to giving |