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

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
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

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

You'll take half an hour to fly to Tokyo.

You'll spend half an hour to fly to tokyo.

pay for sth (付钱买某物） 例：I pay for a book.（我付钱买了一本书。）
pay some money for sth （付多少钱买某物） 例：I pay ten yuan for a book.（我付十元钱买了一本书）
spend some money on sth (花费多少钱在某方面） spend some time on sth (花费...

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pay for sth (付钱买某物） 例：I pay for a book.（我付钱买了一本书。）
pay some money for sth （付多少钱买某物） 例：I pay ten yuan for a book.（我付十元钱买了一本书）
spend some money on sth (花费多少钱在某方面） spend some time on sth (花费多长时间在某方面） 例：I spend ten yuan on a book.(我花费了十元钱买了一本书。）
spend some money (in) doing sth (花费多少钱做某事） spend some time (in) doing sth (花费多长时间做某事） 例：I spend ten yuan (in) buying a book.(我花费十元钱买了一本书。）
sth cost sb some money (某物花费某人多少钱） 例：A book cost me ten yuan.(一本书花费了我十元钱。）
It takes sb some time to do some thing.(做某事花费某人多长时间） 例：It takes me an hour to do my homework.(做我的家庭作业花费了我一个小时的时间。）
所以，这题填 spend， going

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