1) He said that he had been learing. ( change into direct speech) 2) The man visits mountain tomorrow. ( change into future perfect tense)
3) Someone helps the poor,(question tag)

1) He says that he has been learning.

2) The man will have visited the mountain by tomorrow.

3) Someone helps the poor, don't they?

Explanation:

Direct speech avoids "he/she/they said" language.

Future perfect tense will almost always include "will" and "have when referring to an action.

A question tag at the end of a sentence asks a question, usually "don't they, doesn't she, am i, is she etc."

I hope this helped!

c. "i do not consider non-cooperation to be unconstitutional."