Question

【题目】据说他已下定决心乘飞机旅行
It's said that he's by plane.

Answer 1

【答案】made up his mind to travel
【解析】make up one's mind是固定短语，下定决心，后面跟动词不定式形式，下定决心做某事。根据句意可知，这句话使用的是现在完成时态，空前he's是he has的缩写，这里应填动词的过去分词形式made。所以答案是made up his mind to travel。