One by one, the students in the classroom next to the science lab began to look up and __1__ deeply at first and then quickly cover their noses. Something was going terribly wrong in the science lab, and the smell was beginning to __2__ the other classrooms on the hall.

1. respite, inspire, respire
2. pierce, percolate, permeate

1 answer

  1. respire
  2. permeate

The completed sentences would read: "One by one, the students in the classroom next to the science lab began to look up and respire deeply at first and then quickly cover their noses. Something was going terribly wrong in the science lab, and the smell was beginning to permeate the other classrooms on the hall."