问题
选择题
The exercises are extremely difficult, but half of the class_____ them ahead of time. [ ]
A. has already finished
B. will finish
C. have already finished
D. finishes
答案
答案：C
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The exercises are extremely difficult, but half of the class_____ them ahead of time. [ ]
A. has already finished
B. will finish
C. have already finished
D. finishes
答案：C