问题
选择题
They had a wonderful time ______. [ ]
A. to chat on the Internet
B. chatting on the Internet
C. to chat in the Internet
D. chatting in the Internet
答案
答案：B
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They had a wonderful time ______. [ ]
A. to chat on the Internet
B. chatting on the Internet
C. to chat in the Internet
D. chatting in the Internet
答案：B