There are some umberllas behind the door.对some umberllas behind t_英语解答

There are some umberllas behind the door.对some umberllas behind the door.进行提问
__ __ behind the door?划线的部分填2个词.

人气：333 ℃　时间：2019-10-24 11:05:04

解答

what is behind the door为什么不用WHAT ARE默认单数，你问问题之前，怎么知道是单数还是复数，全部默认单数