1.The book is...........,but you are welcome to read it

1.The book is...........,but you are welcome to read it
A.My.           B.Mine.           C.yours
2................Bike is dirty,and I can't tell what colour it is
A.Your.        B.Yours.          C.You
3.Your country is much bigger than............
A.Your.        B.ours.             C.their
4.........Dog í so friendly.It never barks
A.they          B.their.             C.theirs
5...........not easy to find your way in a strange city
A.It.             B.It's                  C.Its