You should get a pair of proper ice skates ______ you skate. [ ]A. though B. before C. while D. unle

题目简介

You should get a pair of proper ice skates ______ you skate. [ ]A. though B. before C. while D. unle

题目详情

You should get a pair of proper ice skates ______ you skate. 
[     ]
A. though
B. before
C. while
D. unless
题型:单选题难度:中档来源:北京市期末题

答案

B

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