---Shall we call for a taxi?

---OK．Let me ________ the phone number in Yellow Pages．

1. A.
   look at
2. B.
   look for
3. C.
   look up
4. D.
   look after

—Shall we call for a taxi?

—OK．Let me _______ the phone number in Yellow Pages．

A．look at        B．look for               C．look up         D．look after．