Question

I (be) fitter, if I (do) more sport. варианты ответов was, would do would be, did​

Answer 1

Ответ:

I would be fitter, if I did more sport.

Answer 2

The correct answer is:

"I would be fitter if I did more sport."

In this sentence, you're talking about a hypothetical or conditional situation, so you use "would" to indicate the conditional and "did" to indicate the action in the past.