books in bed is bad for your eyes.A. ReadB. ReadsC. Not readD. Reading

问题补充：

books in bed is bad for your eyes.

A. Read

B. Reads

C. Not read

D. Reading

答案：

A. Read

B. Reads

C. Not read

(答案→)D. Reading

解析：根据is我们可知，前面应该做主语，而在四个选项中只有D，动名词可以作主语。本句的意思是“在床上读书对你的眼睛有害处。”所以本题选D。