The government has announced that a modern city will be set up in is still a wasteland now

问题补充：

The government has announced that a modern city will be set up in is still a wasteland now .

A. what

B. which

C. that

D. where

答案：

(答案→)A. what

B. which

C. that

D. where

解析：“is still a wasteland now .”做介词in的宾语从句，从句中缺主语句意为：政府已经宣布一座现代化的城市将在这片现在仍是废墟的地方建成。