Question

Выберите нужную форму модального глагола: can (could),be able to, have to.
It was late autumn. A hungry fox was walking about the forest looking for something to eat, but he ... find nothing .Then he came up to the lake. "There ... be some fish", he thought. "If I... catch one I shall... to have a good dinner." He saw a few fishes but they were swimming too fast. But the Fox. ... swim. "How ... I catch them?" he thought and said, "Little fish-es !"- "We ... not hear you." - " Come nearer, you ... come on land and live in peace as I do. You ... always find something to eat in the forest and you will ... to meet many friends." - " He ... be so stupid if he tells us to come on land," thought the fishes.

Answer 1

t was late autumn. A hungry fox was walking around the forest looking for something to eat, but he COULD find nothing. Then he came up to the lake. "There MUST be some fish", he thought. "If I CAN catch one I shall BE ABLE to have a good dinner. “He saw a few fishes but they were swimming too fast. But the Fox COULDN'T swim. “How CAN I catch them?” he thought and said, “Little fishes!” – “We CAN not hear you.” – “Come nearer, you HAVE TO come on land and live in peace as I do. You CAN always find something to eat in the forest and you will BE ABLE to meet many friends.” – “He MUST be so stupid if he tells us to come on land,” thought the fishes.
Хотя у Вас в задании нет глагола must. в двух предложениях он будет правильным.