"Надо поставить свою жизнь в такие условия, чтобы труд был необходим". Выделенное слово является

1)I don't have a brother

2)My grandmother doesn't listen to rock music.

3)His sister can't repair her bike.  

4)Our friends haven't new cartridges.  

5)Her grandfather hasn't a pet.  

6)I shan't take my brother's toy.  

7)Wendy didn't play puzzles yesteday.  

8)Bill's father won't watch the stars in the morning.  

9)Their mother wasn't in at two o'clock.