1.  It simply is the worst part of their life.

2.  She lived most of her life in the worst parts of Washington.

3.  The path here can be very wet, but planks have been laid down over the worst parts.

4.  The screams were the worst part.

5.  The worst part was having to work even when it was raining.

6.  The worst part was the sound.

7.  We Decided the Deception was the worst part of it and agreed to give honesty a try.

8.  The worst part is over.

9.  The worst part of working there is the long commute.