问题
选择题
Only when _____ possible to settle the problem. [ ]
A. does he come will it be
B. he comes it will be
C. has he come it will be
D. he comes will it be
答案
答案：D
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Only when _____ possible to settle the problem. [ ]
A. does he come will it be
B. he comes it will be
C. has he come it will be
D. he comes will it be
答案：D