作业帮spend on等于spend doing还等于什么
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spend on等于spend doing还等于什么
spend on等于spend doing还等于什么
spend on等于spend doing还等于什么
It takes somebody (time/money)to do something.
Something cost somebody(time/money).
It takes sb. sometime to do sth.
it takes sb some time(some money) to do sth
还有pay....for
buy...for