Question

I don't know where he lives, so I'm ________ his telephone number in the telephone book.

1. A.
   looking at
2. B.
   looking up
3. C.
   looking over
4. D.
   looking round

Answer 1

B
剖析：look at瞧，看；look up查找，仰望；look over(医生)检查；look round四下环顾．后一个分句是说从电话车里查找电话号码．