Question

— No wonder you caught a cold. You _____ out last night without a coat.
— I know how silly I was.

A．shouldn’t have gone	B．mustn’t have gone
C．couldn’t have gone	D．mightn’t have gone

Answer 1

A

考察虚拟语气。句意：难怪你感冒了。你昨晚不该不穿外套出去。——我知道我有多蠢了。“shouldn’t+have+done”表示本来不应该做某事，而实际做了。含有指责对方或自责的含意。故选A。