---shall we have to go?Another two miles

A. how farther 是错,应该how far 表示多远
B how longer 应该是how long 或 how much longer
C how much longer 还要有久
Dhow much farther 还有多远 farther 是far的比较级
应该是D , 我们应当再做多远,回答是再两英里.