Mum told me not to drive high spead on the busy street.A. inB. atC. onD. over

问题补充：

Mum told me not to drive high spead on the busy street.

A. in

B. at

C. on

D. over

答案：

A. in

(答案→)B. at

C. on

D. over

解析：in 在里面；at 在一点；on在上面；over在上方，越过。句意：妈妈告诉我不要以高速在忙碌的大街上开车。英语中以某种速度用介词at，故选B。