Question

pls correct the sentence"I do exercise in the morning."

Answer 1

I exercise in the morning.

Answer 2

Answer:

I exercise in the morning.

Explanation:

Here do exercise is erroneous. Exercise is a verb in itself and so is do. Two verbs cannot be used together side by side. Thus either do or exercise has to be removed.  

However the sentence wouldn’t have made sense if exercise was removed as do is a transitive verb and will take up another argument. Exercise however takes up only one argument. So 'do' is removed and exercise has been only kept which makes the above sentence correct.