问题
选择题
—Coach, can I continue with the training?
—Sorry, you can't ________ you haven't recovered from the knee injury. [ ]
A. until
B. before
C. as
D. unless
答案
答案：C
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—Coach, can I continue with the training?
—Sorry, you can't ________ you haven't recovered from the knee injury. [ ]
A. until
B. before
C. as
D. unless
答案：C