---Ihaven’tseenyouforalongtime．Whatareyoubusydoing? --...
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问题详情：
---I haven’t seen you for a long time． What are you busy doing ?
---I have been ______my French because I will go to work in France this summer．
A． speeding up B． lighting up C． making up D． polishing up
【回答】
D
知识点：动词
题型：选择题
