He made a great to the success of the project.
A. contribution
B. progress
C. distinction
D. conclusion
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(答案→)A. contribution
B. progress
C. distinction
D. conclusion
解析:考查名词:A. contribution贡献B. progress进步C. distinction区别D. conclusion结论,句意:他对这个项目的成功做出了很大的贡献。选A。