问题补充:
When you don’t know a word, you can in the dictionary.
A. look it up
B. set it up
C. give it up
D. pick it up
答案:
(答案→)A. look it up
B. set it up
C. give it up
D. pick it up
解析:考查短语辨析。look up查询;set up竖立;建造;give up放弃;pick up拾起,收拾 ;学到;获得。句意:当你不认识一个单词的时候,你可以查字典。故A正确。