Neither the teacher nor the students have read (his, their) assignment.

Neither Russia nor the United States _______________ to have a nuclear war.

The class is preparing for (its, their) trip.

Sam and (I, myself) are in that club. 

Astronauts venturing deep into space may not come back to earth for fifty years.  Returning only to discover an uninhabitable planet.

The class _______________ unhappy about their marks.

Although a family bank account is important.  Sometimes an emergency will arise that cancels all plans for saving.

Which bone is colored in?

The man with the playful collie puppies _______________ them for a living

The box filled with rotten eggs _______________ terrible.