a few days later he came back and thanked my father for helping him. i was getting nervous and expected to be taken to the headquarters for torture, and to make matters worse, at home i had a short-wave transmitter i used for experiments.

Write the above sentence using proper case.
A few days later he came back and thanked my father for helping him. I was getting nervous and expected to be taken to the headquarters for torture, and to make matters worse, at home I had a short-wave transmitter I used for experiments.