I will never forget the people and places we saw in Hong Kong last yearA. which　　　B. who

问题补充：

I will never forget the people and places we saw in Hong Kong last year．

A. which

B. who

C. what

D. that

答案：

A. which

B. who

C. what

(答案→)D. that

解析：当先行词为物和人时，关系代词用that，故选D