+0
Please help me to correct them, thanks.

One Sunny afternoon, it was very stuffy and hot . Peter was on the way home after the football practice. He felt exhausted and thristy. When he passed the a roadside stall, he was attracted by offering many kinds of drinks. / he chose a shady spot to rest and bought a glass of drink to queence his thirst by / at / on the roadside. There were many flies flying around the stall. It seemed untidy and dirty.

After having a fresh beverage, he continued walking home. After he reached home, he felt a stomach ache. He had a sharp pain and writhed on his bed. His mother started to panic and quickly sent him to the clinic nearby. The doctor examined his body and found that he was food poisoning.

The doctor advised Peter to emphasized the hygience of food and surrounding. He took some medicine and went back home with grief. He had learnt a lesson from this incident. From that day onwards, He promised (his mother) never to buy any dirty food from the roadside stall. / He would stay away the roadside stall.
+0
One sunny afternoon, it was very muggy and hot. Peter was on his way home after football practice. He was exhausted and thirsty. When he passed a roadside stall, he was attracted by the many kinds of drinks offered. He chose a shady spot to rest by/at/on the roadside and bought a drink to quench his thirst. There were many flies around the stall. It seemed dirty.

After his drink, he continued walking home. When he reached home, he felt a stomachache. Then he had sharp pains and writhed on his bed. His mother panicked and quickly sent him to the clinic nearby. The doctor examined him and found that he had food poisoning.

The doctor advised Peter to pay attention to the hygiene of the food he ate and its surroundings. He took some medicine and went back home. He had learnt a lesson from this incident. From that day onwards, he promised his mother never to buy any dirty food from roadside stalls. He would stay away from them.
Comments  
Students: We have free audio pronunciation exercises.
Thanks, why don't we say, passed by the roadside stall rather than passed a roadside stall?
'Passed by' suggests that you did not avail yourself of its amenities.