Please check the grammrtical error from these two paragraphs.
Ros and Ami are best friends. They study in the same school and stick together through thick and thin. They both love cats and have two pets named Ca and Mi. They always take good care of their cats and always bring them for short walks in the evening.
One evening, as they were strolling around their neighbourhood, Ros decided to take a rest
under a big shady tree as the weather was scorching hot and she was drenched in sweat. Ami too joined Ros. While they were busy chatting innecessantly, they heard a loud chirping noise from above.