问题
选择题
Can you make sure ______ the gold ring?
A．where Alice had put
B．where did Alice put
C．where Alice has put
D．where has Alice put
答案
答案：C
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Can you make sure ______ the gold ring?
A．where Alice had put
B．where did Alice put
C．where Alice has put
D．where has Alice put
答案：C