网址：http://m.1010jiajiao.com/timu_id_806257[举报]
This is book.
A．I
B．me
C．my
D． I’m
Let _____ help you.
D． mine
My father buys ________ books.
[ ]
Mary,please show ________ your picture.
A．my
B．mine
C．I
D．me