Father his number in the phone book to make sure that he had got it right.A. looked after

问题补充：

Father his number in the phone book to make sure that he had got it right.

A. looked after

B. look up

C. look back

D. look down

答案：

A. looked after

(答案→)B. look up

C. look back

D. look down

解析：短语辨析，四个选项分别表示照顾、仰望查阅、回顾和俯视向下看，根据题意，父亲在号码薄里查阅他的号码，确保他不会出错。选B。