完形填空。帮忙看看This Chinese boy is Li Lei's (birthday) is July 3rd

完形填空。帮忙看看
This Chinese boy is Li Lei's (birthday) is July 3rd. He was born in 1993.He is(twelve)years old. Jack is (Li Lei is)good friend.He's(an)English boy.He is in Li Leis(school).Mrs Read is their(mother).She's an English(woman).She teaches them English.Jack and Li Lei(have) a seceet.Jack is ( )English teacher's( ).
后面两个空的选项是
A.our B. your C.their
A. son B.father C.uncle
希望能给他都细的翻译一下，肯体有些地方能给细细说明一下，先谢谢了！