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ThestudentsweretoldtotheirEnglishbeforegoingabroad.[]A.giveupB.useupC.polishupD.endup

题目详情
The students were told to ________ their English before going abroad.
[     ]
A.give up  
B.use up
C.polish up  
D.end up
▼优质解答
答案和解析
C