Can you make sure_______ the gold ring?

Can you make sure_______ the gold ring?

A.where Alice had put

B.where had Alice put

C.where Alice has put

D.where has Alice put

答案及解析： C

解析：

考查时态和宾语从句的语序。宾语从句中使用陈述语序，排除BD。本句没有出现过去的过去的时间状语，排除A。故C正确。