just ,yet,ever,even的区别!急He ( )finished his homework.\为什么!区别

just ,yet,ever,even的区别!急
He ( )finished his homework.\
为什么!区别

JUST
因为JUST意思是刚刚
YET放在完成时态否定句中意思为还...
EVER放在完成时态肯定句里
EVEN意思是甚至
而你的句子是个过去时态所以就用JUST拉