--Do you want a lift home?---It’s very kind of you but I have a much late in the office.

问题补充：

--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

答案：

A. doesn’t go off

B. won’t gone

C. wasn’t going off

(答案→)D. didn’t go on

解析：考查时态的用法。根据I overslept this morning 可知应用一般过去时。