Question

the poor fellow could have gathered much wealth if he had been a little dishonest. change into passive?​

Answer 1

Answer:

If the poor fellow had been a little dishonest, he could have gathered much wealth.

Or

Much wealth could have gathered by the poor fellow if he had been a little dishonest

Answer 2

Answer:

If poor fellow had been a little dishonest, he could have been gathered much wealth