— We expected you yesterday．
— I'm sorry, I you to say that I couldn't be here until today．
A. must have called
B. would be calling
C. could have been calling
D. should have called
网友回答
A. must have called
B. would be calling
C. could have been calling
(答案→)D. should have called
解析：此处should+have done表示：应该做的事没做。句意：—我昨天等你了。— 对不起，我应该打电话告诉你，我今天才能来这儿。