She ______his number in her phone book to ______that she had got the right number.
A．looked for , be certainB．picked up , make sure
C．picked out , be sureD．looked up, make sure
D
本題考查短語辨析。句中l(wèi)ook up查詢；make sure保證。句意：她在她電話簿查詢他的號碼，目的是保證她得到正確的號碼。
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