问题
选择题
Not until ____ settle the problem. [ ]
A. he returns can we
B. he returns we can
C. does he return we can
D. does he return can we
答案
答案：A
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Not until ____ settle the problem. [ ]
A. he returns can we
B. he returns we can
C. does he return we can
D. does he return can we
答案：A