The camera is a souvenir(纪念品) by my uncle for me when he went to Japan. I do like it.
A. to buy
B. to be bought
C. bought
D. buying
网友回答
A. to buy
B. to be bought
(答案→)C. bought
D. buying
解析：这里主句已经有谓语动词is，所以buy用它的非谓语动词的形式，souvenir与buy是被动关系，故排除AD；to be bought表示将来被买，不符句意；又因为相机是叔叔去日本时买的，故选C。