I know a man who has a coin collecion worth several____dollars.A.thousandB.thousands of为什么呀

I know a man who has a coin collecion worth several____dollars.A.thousandB.thousands of为什么呀
I know a man who has a coin collecion worth several____dollars.
A.thousand
B.thousands of
为什么呀

I know a man who has a coin collecion worth several____dollars.A.thousandB.thousands of为什么呀
A.
前面有数量词several,thousand不能用复数.
Thousands of,意思是几千