We had no time, but we had a great time the model plane togetherA. to chat；makingB. to ch

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(答案→)A. to chat；making
B. to chat；to make
C. chatting：making
D. chatting；to make
解析：固定搭配have no time to do 没时间做某事；have a great time doing sth 做某事玩的很开心。