问题
选择题
Half of the students done most of the work. The rest of the work rather difficult. [ ]
A. have ; is
B. has ; are
C. have ; are
D. has ; is
答案
答案：A
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Half of the students done most of the work. The rest of the work rather difficult. [ ]
A. have ; is
B. has ; are
C. have ; are
D. has ; is
答案：A