问题
选择题
Kangkang always likes chatting with their classmates ________ the Internet in his free time. [ ]
A. by
B. in
C. of
D. on
答案
答案：D
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Kangkang always likes chatting with their classmates ________ the Internet in his free time. [ ]
A. by
B. in
C. of
D. on
答案：D