He . It's a shame my mobile phone was power-off.
A. ought to call me
B. could have called me
C. may be calling me
D. might call me
网友回答
A. ought to call me
(答案→)B. could have called me
C. may be calling me
D. might call me
解析： could have done对过去时间里发生的事情的推测“可能……过”。