Tutoring

I met with Tuba for tutoring. She had an essay she had written on what makes a person successful. She is trying to practice for the written portion on the TOEFL exam. Her paragraph structure was good, but she is still having a problem with singular and plural.
I circled the items that needed to be corrected. While she was correcting them, I wrote out sentences that were similar to those she had written incorrectly.
The only one she missed was in a sentence that used people. So we went over why people was already plural and why she did not need to have an "s" on the end to make it plural.
I think she is a little stressed about the essay portion of the TOEFL, as well as the speaking portion.
After we corrected her essay, I asked her a similar question and asked her to speak her answer to me as she would do on the TOEFL. She seemed to really like this exercise and asked to do it again the next time we meet.