请问这道题为什么选A

问题描述:

请问这道题为什么选A
Can you tell me how to make apple jucie?
Sure.Please watch carefully and you will see how it( )
A is made B is making Cmakes D will make

你能告诉我怎么榨苹果汁吗?
当然可以.请仔细看,你就会知道怎么做.
因为苹果汁是被榨出来的,主语it代替苹果汁,所以要用被动语态be加动词的过去分词,就是is made