No, trochę poprzawiłem. Poprawki masz kursywą (mam nadzieję, że się przekopiuje z WORDA). Trochę byczków jeszcze może być ale na 95% jest już OK.
James was with his class on a school trip to the zoo. He saw many interesting animals, for example monkeys, elephants, giraffes and snakes. They were strolling along the paths and admiring animals. When they had their free time, everyone went to the shop with souvenirs. James didn't want to wait in queue, and he decided to visit one more ??? which they had missed. It was close to 2 o'clock. When he went in, to that build(????) he found there empty cages, but when he wanted to go back, he heard a noise. That sound was coming from gorilla’s cage. Gorilla was cold and wet. She had cuts(???) shoulders and dirty fur. He* was shocked. He looked at this animal and couldn't believe, how people are able to do something like that. He was going nearer, very slowly. Gorilla touched his hand, and he felt like she* would be asking him for help. He had to go back, but he promised that he would come back. He went to the place when they were appointed. He went back home. He packed himself, and at midnight, came back to the zoo. He went there where he met the gorilla, he stole keys, from watchman who was sleeping. He opened the cage, and took the gorilla to the river-bank, where his grand father’s boat was waiting for them. He rowed as much as he could, they floated to big forest that was situated ten kilometers away. When James saw big trees, he sighted with relief. On a bank, he said to the gorilla “ you are safe, it's your new home, it's ok, you are free". And his adventure with gorilla ended.
*O zwierzętach mówimy IT. Chba, że jakoś emocjonalnie do nich podchodzimy – wtedy HE albo SHE zależnie od płci.