Choose the suitable word to complete the passage

Home is place where I feel heaven and my parents are the reason __________ (1) it. We, as a family have spent the best times of life. Only when we are at home, we feel happy. Both my father __________ (2) mother are working. __________ (3), we find time to share our daily experiences. My mother __________ (4) extra care to prepare the most delicious food I like and she is my best friend. My father has always been my best companion and I would say he is my mentor. Without my parents, I __________ (5) what I am today. I love my parents very much and we always wish to be the lovable family as we are now, ever.

(1) _______

• A. 
  in
• B. 
  for
• C. 
  of
• D. 
  on