Question

- Has John arrived yet?   
-- No, she _______ an hour ago.

A．was supposed to come	B．must have come
C．should come	D．ought to have come

Answer 1

D

考查虚拟语气。句意：约翰已经到了吗？——不，他应该一个小时后到达。“ought to+have+done”表示过去应该做而实际并没有做，译成“理应做……”，往往表示遗憾。故选D。