If you take a bus it will only take you 10 but it’s about 30 walk if you want to go there

问题补充：

If you take a bus，it will only take you 10，but it’s about 30 walk if you want to go there on foot.

A. minutes;minutes’

B. minutes;minutes’

C. minutes’;minutes’

D. minutes;minute’s 

答案：

(答案→)A. minutes;minutes’

B. minutes;minutes’

C. minutes’;minutes’

D. minutes;minute’s 

解析：30 minutes’ walk 步行30分钟的路。