I think it is All sentences except one
Hope this helps ;)
I want to become a teacher because teachers earn a solid paycheck. While teaching is not a get-rich-quick profession, starting salaries are comparable to many other professions. According to the Bureau of Labor Statistics, public-school teachers are actually paid about 11 percent more than the average professional worker. Teaching careers also offer opportunities for advancement and increased pay over time. Another reason I would like to become a teacher is because I get to share my passion in the classroom. Who’s the teacher that got youexcited about a subject, the one who inspired you to start putting in extra time because you just loved what she was teaching? That’s what happens when teachers share their excitement and enthusiasm: it’s contagious. Sharing your love of the subject matter with students is another one of the benefits of being a teacher.
Correct answer is the second option: "The letter was <em>sent</em> by a disgruntled customer."
The first option refers to the decimal unit.
The third option refers to arranging for the transport of something.
The last option refers to a smell.