Thelongserviceofdecadesoftheto-be-retiredwiththecompanywas________apresenteachfromthePresident.

参考答案:

C

习语搭配。acknowledge with(用馈赠或言辞)表示感谢，做出反应：The producer wishes to acknowledge the assistance of the Los Angeles Police Department in the making of the film．制片人希望对洛杉矶警察局在本片拍摄过程中所给予的协助表示感谢。