You should the new words that you don’t know how to spell.
A. look for
B. look up
C. look after
D. look down
网友回答
A. look for
(答案→)B. look up
C. look after
D. look down
解析：考查短语辨析。look for 寻找，look up查字典，look after照顾，look down向下看。句意：你应该查你不知道如何拼的生词。所以选B。