It is a good habit of to read a few lines before going to bed.A. IB. meC. myD. mine

问题补充：

It is a good habit of to read a few lines before going to bed.

A. I

B. me

C. my

D. mine

答案：

A. I

B. me

C. my

(答案→)D. mine

解析：I人称代词主格,我;me人称代词宾格,我;my形容词性物主代词,我的;mine名词性物主代词,我的.句意:在睡觉前读点书,是我们的一个好习惯.结合语境可知本句中用名词性物主代词做介词of的宾语,故选D.