问题
选择题
Jack _____ leave _____ his teacher comes back. [ ]
A. doesn't, until
B. /, until
C. won't, /
D. won't, until
答案
答案：D
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Jack _____ leave _____ his teacher comes back. [ ]
A. doesn't, until
B. /, until
C. won't, /
D. won't, until
答案：D