.The engineer ______my father works is about 50 years old.

题目

.The engineer ______my father works is about 50 years old.
to whom B.on whom C.with which D.with whom

答案

D 跟我爸爸一起工作的工程师大约50岁
后面是一个定语从句,完整的应该是my father works with (the engineer),所以就是with whom