问题
选择题
Only in this way____to make improvement(提 高)in the operating system. [ ]
A. you can hope
B. you did hope
C. can you hope
D. did you hope
答案
答案：C
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Only in this way____to make improvement(提 高)in the operating system. [ ]
A. you can hope
B. you did hope
C. can you hope
D. did you hope
答案：C