spent on 与spent in 有什么区别?

spent on 与spent in 有什么区别? spent on spent in spent of spent to 与spent in 有什么区别? look at outside 与 look outside 有什么区别 到底加不加 at After having spent my first day in the town center ,I decided to lose my way on my second day.请问，为什么用having spent ,不用 spent spent. Most of his time ( )computer games.A.spent playing B.is spent to play C.is spent in playingD.spent on I spent two days in finishing reading this book.为什么不是spent.on? spend/waste.doing sth.spent on sth./spent .(in) doing sth. 用spent on(后跟名词）,spent in(后跟动名词)各造三个句子谢谢急~ We still remember the days ___we spent together in the desert为什么不能填when不是有spent on the days 这种说法吗? spent sometime on swimming还是spent sometime in swimmingswimming看成sth动名词还是doing sth?on or in? The MP3_too much.he_200 yuan_it.A.spent;spent;on B.cost;spent;on C.paid;paid;for D.paid;cost;in选哪个 另外解释一下为什么选这个 spent some time in sth Mary spent 90 yuan on new cloths有没有错误有没有语法错误不是啊,spent是过去时 “spent与cost的区别 He spent his life in the service of others.不是说spend ...on...或spend...(in)doing ...应该是He spent his life on the service of others.. When she was in Paris ,Mary spent lots of money on clothes（ ）her （ ）in Paris ,Mary spent lots of money on cloths they spent和they have spent有啥区别