They had a wonderful time
A. chating on the Internet
B. chatting on the Internet
C. chating in the Internet
D. chatting in the Internet.
网友回答
A. chating on the Internet
(答案→)B. chatting on the Internet
C. chating in the Internet
D. chatting in the Internet.
解析:句意:他们在网上聊的很开心。chat on the Internet在网上聊天,固定结构,chat 的动名词形式双写t加ing,故选B