To telephone him, you will have to（ ）his number in your phone book.
A.正确答案Blook to
B.look up
C.look through
D.look at
To telephone him, you will have to（ ）his number in your phone book.
To telephone him, you will have to（ ）his number in your phone book.
A.正确答案Blook to
B.look up
C.look through
D.look at
