During detention Erin watched over everyone while Monica sat quietly during his punishment. 
OPTIONS:
- Erin is a student.
- Monica is a student.
Monica is a student.

Leslie thought that Hunter did not brush his teeth often enough. 
OPTIONS:
- Leslie said his breath smelled bad.
- Hunter said his breath smelled bad.
Leslie said his breath smelled bad.

Although Lawrence was a better teacher than Nelson, 
OPTIONS:
- Lawrence had a harder time dealing with bullying.
- Nelson had a harder time dealing with bullying.
Lawrence had a harder time dealing with bullying.