—Can you tell me the book? —Last year. A. when did you buyB. when do you buyC. when you bu

问题补充：

—Can you tell me the book?

—Last year.

A. when did you buy

B. when do you buy

C. when you buy

D. when you bought

答案：

A. when did you buy

B. when do you buy

C. when you buy

(答案→)D. when you bought

解析：句意：你能告诉我你在什么时间买的这本书吗？去年。宾语从句的结构：主语+谓语+连接词+从句。从句在句中作宾语。从句要用陈述句的语序。如果主句是一般现在时，从句根据需要选择时态，如果主句是过去时态，从句要用相应的过去时态。但是从句是客观真理，一般用一般现在时态。AB选项是疑问句语序，故排除。主句是一般现在时态，从句根据回答last year，应选过去时态。故选D