—Do you remember ­ came to our city?—Yes. On December 25 last year.A. when the singing

问题补充：

—Do you remember ­ came to our city?

—Yes. On December 25 last year.

A. when the singing star

B. how the movie star

C. why the famous speaker

答案：

解析：此题重点考察宾语从句的引导词，根据答语可知询问的是时间，故为when来引导。