What's the best way to study chinese?

Miguel is making an obstacle course for field day.at the end of every sixth of the course,there is a tire .at the end of every third of the course,there is a hurdle.at witch locations of the course will people need to go through more than one obstacle?

What is the author's purpose in this passagea. to remind people to avoid individuals who occasionally display bad manners.b. to encourage people to embrace the feeling of superiority over others.c. to persuade people to demonstrate good manners at all times.d. to convince people to freely express their emotions.

Which sentence uses the verbs correctly?