Some roads will be used ___ the big cars.A.to B.for 为什么?

Some roads will be used ___ the big cars.A.to B.for 为什么?
Some roads will be used ___ the big cars.
A.to B.for
为什么?

Some roads will be used ___ the big cars.A.to B.for 为什么?
B for
be used to
用被来做...
be used for
为...所用..
根据句意:修路主要是用来为大车所用..

yes, choose B

B
be used to
习惯用，用来做...
be used for
用来做...,被用来为...
这里主要说是为大车准备或者修建的路

B

be used for
为某某而使用
例:The book is used for children.