Можете , по примеру не понимаю ничего?

Iam against skinheads because i believe they are too extreme in thier believes. generally speaking any extreme causes troubles. there are many types of skinheads who belive in different things. mostly i am against those who are racist skinheads. most of them are violent. it is very dangerous to walk on the street if you are forienger or you look like forienger. i think that government and society has to do something about racist skinheads.they have to know they limits. you who have told them that one race is better than abother one? who has given them right to attack people based on racist issues? i want to believe that our world can be change for better soon enought.

1. are there any tree in the yard? there aren't any trees in the yard. what is there in the yard? 2. did she have to stay at school after classes? she didn't have to stay at school after classes. who had to stay at school after classes? what did she have to do after classes? when did she have to stay at school? 3. does your sister go to school at 7 o'clock? my sister doesn't go to school at 7 o'clock. who goes to school at 7 o'clock? at what time does your sister go to school? 4. did we read this book last year? we didn't read this book last year. who read this book last year? when did we read this book? what did we read last year? 5. will you send a letter to your grandmother tomorrow? i shan't send a letter to my grandmother tomorrow. what shall i send to my grandmother tomorrow? who shall i send a letter to tomorrow?