7.He must have had an accident,or he ____ then.[A] would have been here[B] had to be here[C] should be here[D] would be here、

7.He must have had an accident,or he ____ then.
[A] would have been here[B] had to be here[C] should be here[D] would be here
、

A
虚拟语气
要不他已经到这儿了