has today's class cancelled 为什么用的是Has

has today's class cancelled 为什么用的是Has
has today's class cancelled 为什么用的是Has

has today's class cancelled 为什么用的是Has
has就要用been表示已经被取消了吗
is就直接cancelled就好,表示陈述事实.

错误。应该用be
Is today's class cancelled?
or
Has today's class been cancelled?