问题描述：
—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
—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
问题解答：
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