问题
选择题
We advised them to take a rest, but they insisted _______ the work.
A．finish
B．to finish
C．in finishing
D．on finishing
答案
答案：D
短语：坚持做某事insist on doing 句意：我们建议他们休息一会，但是他们坚持完成工作。所以选D。
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