I had promised to send him an email_______ I got home but I was so busy that I forgot to do so

The instructor asked us to list anything in our past that we felt ______ of，regretted and read our lists aloud.

Heyou more help,even though he was very busy.

Put the books back ________ they belong after you have finished them.

I’ve always treasured the watch tome on my eighteenth birthday.