问题
选择题
(2013·西安市高三二模)—John looks a bit upset. Did you tell him the bad news?
—Yes, but I ________ him after his birthday party.
A．should have told
B．must have told
C．shouldn't have told
D．needn't have told
答案
答案：A
选A 句意：“约翰看起来有点伤心，你把那个坏消息告诉他了吗？”“是的，但我本应该在他生日后告诉他。”表示本应该做某事用should have done。