Question

The scientist, __________ my father works, is about 50.

A．on whom

B．to which

C．with which

D．with whom

Answer 1

D 

试题分析：句意：和我爸爸一起工作的科学家大约50岁。with whom 引导定语从句，with whom 放在定语从句中即为:my father works with the engineer. 所以选D。