问几道英语句子 造句 急 1.用cost造一个句子 再写一个同义句.2.用spend造一个关于时间句子,写一个同义句

The dictionary cost me $ 20.
同义句：I spent $ 20 for the dictionary .
I spend two hours walking to school every day .
同义句：It takes me two hours to walk to school every day .

1.the book costs me 10 yuan.
I spent 10 yuan on this book.
2.
My sister spent a whole week in working out this complex question.
My sister took a whole week to work out this complex question.

How old are you ？

IT Cost me fifty yuan on the pants
I spend fifty yuan to buy the pants
I spend one hour to finish my homework
It cost me one hour to finish the homework

1.The bag costs me 15 yuan.
同义句:
It costs me 15 yuans on the bag.
I spend 15 yuan on the bag
I pay 15 yuan for the bag.
I buy the bag at 15 yuan.
2.I spend 1 hour on my homework every day.
同义句:
It takes me 1 hour to finish my homework every day.
It costs me 1 hour on my homework every day.
I expend 1 hour on my homework every day.

1. The book costs too much for me to buy it.
The book costs too much so that I cannot buy it.
2. I spend most of my time on my maths problems.
I spend most of my time in working out my maths problems.