问题补充:
---You are late again. The class for five minutes.
---Sorry. There is something wrong with my bike.
A. began
B. has begun
C. was on
D. has been on
答案:
A. began
B. has begun
C. was on
(答案→)D. has been on
解析:句意:你又迟到了。已经上课五分钟了。对不起。我的自行车坏了。Begin为非延续性动词,不可与一段时间的状语连用;Be on为表示状态的短语,可与for加一段时间连用表示动作的持续;故选D。