She his number in her phone book to that she had got the right number.
A. looked for , be certain
B. picked up , make sure
C. picked out , be sure
D. looked up, make sure
网友回答
A. looked for , be certain
B. picked up , make sure
C. picked out , be sure
(答案→)D. looked up, make sure
解析：本题考查短语辨析。句中look up查询；make sure保证。句意：她在她电话簿查询他的号码，目的是保证她得到正确的号码。