People in Chongqing are proud of they have achieved in the past ten years . A. that B. wh

问题补充：

People in Chongqing are proud of they have achieved in the past ten years .

A. that B. which C what D. how

答案：

解析：C “they have achieved in the past ten years ”做介词of的宾语，宾语从句中缺少have achieved的宾语。