---Do you want a lift home?
---It’s very kind of you, but I have a much late in the office. I overslept this morning because my morning clock .
A. doesn’t go off
B. won’t gone
C. wasn’t going off
D. didn’t go on
网友回答
A. doesn’t go off
B. won’t gone
C. wasn’t going off
D. didn’t go on
解析：本题考查时态的用法。根据I overslept this morning 可知应用一般过去时。