为什么i spent 5 yuan _this book.填buy,而不是to buy 或 bought?

为什么i spent 5 yuan _this book.填buy,而不是to buy 或 bought? I spent ten yuan buying the book 同义句 i spent 2000 yuan on the medicine cost 改成cost I spent 200 yuan to buy a bike I spent ten yuan on this book.改为否定句I spent ten yuan on this book.改为否定句 同义句i spent ten yuan on the dictionary i () ten yuan () () the dictionary I spent ten yuan buying the book 同义句 I （）ten yuan （）the book I spent 500 yuan on the bike.改为同义句 I ( ) the bike ( ) 500 yuan. i spent 200 yuan buying the new bike.[同义句]i --- 200 yuan ---- the new bike WangLin spent 10 yuan _____ a new pen.为什么? I spent 100 yuan on a MP5 yesterday 同义句是不是I spent 100 yuan buying a MP5 yesterday和I pay 100 yuan for a MP5 yesterday? This book_____two yuan .so I two yuan in buying it. A.cost:spend B.costs:spent I spent 200 yuan on this vase(改为同意句）I _____ 200 yuan ____ this case I spent ten yuan on the book.I ____ten yuan ____the book.改为同义句每条横线填一词 I spent ten yuan on the picture.与 I pay ten yuan for the picture.哪个正 I spent 200 yuan on these books.同义句=I ______ 200 yuan ____ these books I ( )100yuan on it 括号里用pay还是spent?还有cost,spent,pay,take的用法 I spent 100 yuan buying the souvenirs.(同义句)The c___ / f____ of the souvenirs _____ 100 yuan