问题补充：
—Could you tell me ? —It’s twenty minutes by underground.
A. how can I get to your school
B. how much it costs to get to your school
C. how far it is from your home to your school
D. how long does it take me to get to your school
答案：
A. how can I get to your school
B. how much it costs to get to your school
(答案→)C. how far it is from your home to your school
D. how long does it take me to get to your school
解析：句意：你能告诉我从你家到你们学校有多远吗？乘地铁二十分钟。根据答语It’s twenty minutes by underground可知前面是对距离的提问。在宾语从句中只能用陈述句语序，不能用疑问句语序，所以选C。
