－ can you finish your homework Ben?－ In thirty minutes. A. How farB. How soonC. How longD

问题补充：

－ can you finish your homework, Ben?

－ In thirty minutes.

A. How far

B. How soon

C. How long

D. How often

答案：

A. How far

(答案→)B. How soon

C. How long

D. How often

解析：本题回答语的含义是在30分钟后，表示在多久以后提问用how soon，故本题选B。