2010 Shandong Question 31 Single-choice Differentiating 2010_山东卷 (英语) 27. (1分)$Sam _____ some knowledge of the computer just by watching others$ working on it. ( ) A. brought upB. looked upC. picked upD. set up Answer keyC ☆ SaveCan't do it, show the explanation查看原卷 →