— will you finish your homework?— In half an hour.A. How longB. How farC. How soonD. How

问题补充：

— will you finish your homework?

— In half an hour.

A. How long

B. How far

C. How soon

D. How often

答案：

A. How long

B. How far

(答案→)C. How soon

D. How often

解析：句意：你要多久完成作业？半个小时。finish your homework 完成作业；A多长；B多远；C多快；D多久一次，根据In half an hour半个小时之后；结合题意选C。