23、 He must have had an accident,or he___ here then.A、would have beenB、should beC、had to beD、would be

23、 He must have had an accident,or he___ here then.A、would have beenB、should beC、had to beD、would be
23、 He must have had an accident,or he___ here then.
A、would have been
B、should be
C、had to be
D、would be

23、 He must have had an accident,or he___ here then.A、would have beenB、should beC、had to beD、would be
A
虚拟语气.前半句用了现在完成时,所以后半句也应该用现在完成时.

A
他肯定是出什么事了，要不那时他就到了。
虚拟语气的题
实际上他并没有到。
would have done结构表本来会怎样，而实际没有怎样。用于对过去事情的虚拟

A would have done虚拟