问题
选择题
You should finish your lessons _____ you go to play. [ ]
A. while
B. as
C. before
D. when
答案
答案：C
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You should finish your lessons _____ you go to play. [ ]
A. while
B. as
C. before
D. when
答案：C
请根据案例的条件，回答下列问题：