Question

I am interested ____ fishing что поставить:

Answer 1

◘ I am interested in fishing. — Я увлекаюсь рыбалкой.
◘ I am interested on fishing. — Меня интересует рыбалка.

Answer 2

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Answer 3

I am interested in fishing.

Based on your sentence, it seems like you are looking for a word to fill in the blank. Since you mentioned "fishing," the sentence is already complete. The word "fishing" is the correct option to put in the blank to express your interest in the activity.