问题
选择题
—John, you can't go out to play until your homework _____.
—OK, Mum. [ ]
A. finishes
B. has finished
C. is finished
答案
答案：C
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—John, you can't go out to play until your homework _____.
—OK, Mum. [ ]
A. finishes
B. has finished
C. is finished
答案：C