– What’s Joan dong? newspapers in the room.A. She readingB. She readsC. To readD. Read

问题补充：

– What’s Joan dong? -- newspapers in the room.

A. She reading

B. She reads

C. To read

D. Reading

答案：

A. She reading

B. She reads

C. To read

(答案→)D. Reading

解析：句意为：--琼在干嘛？ --在阅览室里读书

省略的考察，省略了句子主语+谓语

故选D