问题
选择题
There are many people _____ only on-line activity is sending and receiving e-mail. [ ]
A. who
B. what
C. which
D. whose
答案
答案：D
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There are many people _____ only on-line activity is sending and receiving e-mail. [ ]
A. who
B. what
C. which
D. whose
答案：D
