Mary had a traffic accident and has been sent to the hospital. Did you tell her boss a

问题补充：

--- Mary had a traffic accident and has been sent to the hospital. Did you tell her boss about it?

--- Yes, but I her husband first.

A. should have told

B. shouldn’t have told

C. must have told

D. needn’t have told

答案：

(答案→)A. should have told

B. shouldn’t have told

C. must have told

D. needn’t have told

解析：情态动词用法辨析。A本应该做某事，实际上却没有做；B本不应该做某事，实际上去做了；C一定做了某事；D本不必要做某事，实际上却做了。结合句意可知A正确。句意：—Mary出了事故被送到医院了。你有没有告诉老板？—是的。我已经告诉了老板。但是我本应该先告诉她丈夫的。