would do 和was to open when he ____ the door,he found his keys were nowhere.A.to,by B.
when he ____ the door,he found his keys were nowhere.A.to,by B.by,to C.had opened D.was to
.將要開的時(shí)候,但是would open 是will open的過(guò)去式,雖然常用作過(guò)去常常的意思,但是也是will do的過(guò)去式啊~也可以理解過(guò)過(guò)去要開門的時(shí)候啊,怎么A錯(cuò)了,錯(cuò)哪里了