Writing prompt: Food Safety

Student essay:
A couple of days ago,one of my classmates bought some food from a market and ate with a couple of friends because of his birthday.Soon my classmates who ate the food had stomachaches and their faces became green.And someone vomited badly,so they were sent to the hospital immediately.After being examined,they were told that they got poisoning by the doctor.Fortunately,they didn't have life risk just was a little weak.It thanks to delivered in time.
In this matter,we have to pay attention to the food safety again,the problem relationships with our precious lives.So I sincerely hope the whole social can strengthen supervising the food safety and be back to us healthy bodies.

Corrected essay:
A couple of days ago, one of my classmates bought some food from a market and ate with a couple of friends because it was his birthday. Soon my classmates who ate the food had stomachaches and their faces became green. And someone vomited badly, so they were sent to the hospital immediately. After being examined, they were told by the doctor that they had been poisoned. Fortunately, they didn't have life-threatening risks and were just a little weak. It was thanks to being delivered in time.
In this matter, we have to pay attention to food safety again, as the problem is related to our precious lives. So I sincerely hope the whole society can strengthen supervision of food safety and return to us healthy bodies.