you look so upset,what's wrong with you?the door _______.Can you help me?

问题描述:

you look so upset,what's wrong with you?the door _______.Can you help me?
Awon't open Bwon't be open Ccan't open Dcan't be opened
选a,为什么不用被动语态及其他的?

A 动词open用主动表示被动含义.类似动词:hang,belong ,seem 等.那为什么不用can't?