Thank You !!! I'm very glad when someone helps me to improve . I wish all posts here in this forum were proofread . Next time , when you see my posts ,please , show me the mistakes , including this one . Actually , sometimes I'm very sloppy ,like in the case of " book is" , but the other one "Those who doesn't"  I did't know what to use after the pronoun who .

I have to say that your comments made me very happy and enthusiastic  to continue studying English, sometimes we need  motivation . Thanks .