--- What’s Joan doing?
--- newspapers in the room.
A. She reading
B. She reads
C. To read
D. Reading
网友回答
A. She reading
B. She reads
C. To read
(答案→)D. Reading
解析：考查时态。句意：—Joan正在做什么？—在房间里看报纸。根据句意说明描述的是现在正在发生的事情，所以使用进行时的时态，是对what is Joan doing?的回答。故D正确。