Give the correct form of the words in brackets

Give the correct form of the words in brackets . 
1. Mr.Quang is a ............................        (business) 
2.Do you know the .....................of this book ?        (write) 
3. She sent her best wishes for my future ............           (happy).
4. Today is an awful day for me . It is the ............ day of the year.     (bad)