-----What ?
-----I my key and can't open the door.
A. happened, lost
B. has happened, lost
C. happens, have lost
D. has happened, have lost
网友回答
A. happened, lost
B. has happened, lost
C. happens, have lost
(答案→)D. has happened, have lost
解析：考察现在完成时对现在造成的影响。