The correct phrase is "I have begun." "Begun" is the past participle form of "begin."
Begun is correct.
"I have not yet begun to fight!"
I/you/we/they have begun. He/she/it has begun.
The population of Begun is 19,333.
Begun is the correct spelling.
Begun is the past participle of begin. Begin is an irregular verb.begin/began/begun
which year recycling begun in Germany
The present tense of begun is begin.
I had begun to answer this question for you when I remembered I forgot the answer.
The Killing Had Begun was created in 1994.
Vladimir Begun died in 1989.