I am writing to you because I need help with an assignment I received from my professor at the university. It is about ‘European Society in the Twentieth Century' and I looked at my local library but couldn’t find a satisfying source. Then you came to my mind. I know you are knowledgeable about this subject. That’s why I write you. Everything I found about the subject was about Second World War and its effects on people. But I want something more about the cultural side of society. How was their culture before the twentieth century and what changed in the twentieth century? About the new generation born during this time. How did they perceive the rapidly changing world around them? These are the questions I want to be answered. I know you are busy and you are working but this will help me greatly. If you can answer these questions for me I will be very grateful. I hope I am not imposing on you so much. Hope to hear from you soon. 
I am writing to you  
because
 I need  
help
 with an assignment I received from my professor at the university. It is about ‘European Society in the Twentieth Century' and I looked at my local library  
but
 couldn’t find a satisfying source. Then you came to my mind. I know you are knowledgeable about this subject. That’s why I write you. Everything I found about the subject was about Second World War and its effects on  
people
.  
But
 I want something more about the cultural side of society. How was their culture  
before
 the twentieth century and what  
changed
 in the twentieth century? About the new generation born during this time. How did they perceive the  
rapidly
 changing world around them? These are the questions I want to  
be answered
. I know you are busy and you are working  
but
 this will  
help
 me  
greatly
. If you can answer these questions for me I will be  
very
 grateful. I hope I am not imposing on you  
so
 much. Hope to hear from you  
soon
.