Проверьте упражнение по английскому?

Поставьте выделенные Глаголы в Past Indefinite. One day a dog FINDS (found) a big bone, and he begins to think where he can eat this bone in peace. He GOES (went) to small river, which HAS (had) a bridge over it, and BEGINS (began) to cross the bridge. When the dog COMES (came) to the middle of the bridge, he LOOKS (looked) down into the water. He SEES (saw) himself there, but he THINKS (thought) that he SEES (saw) another dog, who HAS (had) another bone. He MAKES (made) up his mind to take away the bone from that other dog, so he JUMPS (jumped) down into the river and his bone FALLS (falled)out of his mouth and goes to the bottom. In the end, the dog LOSES (lost) his bone and DOES NOT FIND (does not found)