Question

he usually (go) for a walk in the morning correct the tense

Answer 1

he uses to go for a walk in the morning .

Answer 2

Answer:

He usually goes for a walk in the morning.

Explanation:

In this sentence the simple present tense has been used. The simple present tense denotes any action that is taking place now right at this moment. The -s, -es morphemes are mainly used to denote the simple present tense.  

For example: walks, sleeps, eats, leaves etc. In this sentence, goes has been used. This is because the person being talked about usually does this action repeatedly and routinely every morning and at a particular moment. Thus goes will be the correct answer.