— Shall I turn on the TV, Mom?
—No. You should be quiet _____ wake up your sleeping brother.
| A．so not as to | B．so as not to | C．so as to not | D．not so as to |
Both of my parents insisted _______ a computer for me, but I don’t think it is necessary.
| A．to buy | B．buying |
| C．on buying | D．in buying |
Not only should you get used ______ under difficult conditions but you also you pay more attention ______ your work well.
| A．to work, to do | B．to working, to doing |
| C．to work, to doing | D．to working, to do |
Once your business becomes international, _____ constantly will be part of your life.
| A．you fly | B．your flight |
| C．flight | D．flying |
All her time _______ experiments, she has no time for films.
A. devoted to do B. devoted to doing
C. devoting to doing
He knows nothing about it, so he can’t help _______ any of your work.
| A．doing | B．to do |
| C．being doing | D．to be done |