I'll take you half an hour ---------to Tokyo by air (保持句意不变)

问题描述:

I'll take you half an hour ---------to Tokyo by air (保持句意不变)
it'll take you half an hour togo Tokyo by air保持句意不变you'll()half an hour ()toTokyo

正确回答应该是:
you will spend half an hour flying to tokyo
因为sb spend 一段时间doing 的结构=it tkaes sb 一段时间+to do sth
这里的by air =fly to
因此要用成flying