when the stranger walked towards him,he fled,the door( )behind him.a .slammed b,slamming
问题描述：
when the stranger walked towards him,he fled,the door( )behind him.a .slammed b,slamming
为什么选择B?
答
如果选了A：When the stranger walked towards him,he fled,the door( slammed )behind him.这句话就有两个主语和两个谓语了,这是不对的.除非the door 前面有and来连接.否则不能用slammed.slamming做形容词,修饰door...