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A volunteer is a person willing to help others, one who offers to do something without__________.
| A．paying | B．paid | C．being paid | D．to pay |
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 |