--- Can you tell me so many boxes of salt?
--- In “Legou Supermarket”
A. why you bought
B. where you bought
C. where did you buy
D. who bought
网友回答
A. why you bought
(答案→)B. where you bought
C. where did you buy
D. who bought
解析：此题重点考查宾语从句的时态和语序问题，无论哪种句式结构充当宾语从句都要用陈述句语序，从句的时态要和主句的时态保持一致。