If my stomach hadn't felt uncomfortablebeen upset, I would have run more.

When it was class break, there were two girls passedTwo girls passed me during break time.

I heard one of them answer another: , saying, "she wais a girl."

It wasn't the first time that I heard people talk about my gender near me in the school, and I believe that it alsoit won't be the last time.

"Wasn't the first time...and won't be the last" is the common phrase.

There are ten female staff in the school, and my hair is the shortest, whicith length is liksimilar to the boys'.

I also like wearing shirts and casual trousers, and I seldom wear a bra, which makes me look like a man.

Would be best to specify the type of shirt, as in general a teacher wearing a shirt (blouse, button-down, etc.) is not necessarily informal.

HoweverRegardless, the point is that many students are rude.

It is really impolite to talk about someone who's nearby.

Today, Ms. Li said, "our students should be more politer."

Last week, she also said, "I have never hadtaught such naughty students likeas these of this school."

She had worked in her hometown for a few years.

I am quite in agreement with her.

Or, "I quite agree with her."

There are several boys, who are very troublesome, in her class.

I can't do nothing for herThere's nothing I can do for her, unfortunately, because my students also madke a lot of trouble.

"Can't do nothing," while it actually means the same thing as "can do nothing," makes you sound like a hillbilly, hhh.