Question

—How did you get in touch with the travel agent, Robin?
—Oh, that’s easy. I surfed the Internet and then called one ________ the telephone
number is provided.

A．which

B．in which

C．of which

D．whose

Answer 1

C

因为of which引导定语从句，并在从句中作定语。of which the telephone number =" whose" telephone number。