add commas, semicolons, or colons if needed. otherwise, submit the text without any additional…

add commas, semicolons, or colons if needed. otherwise, submit the text without any additional punctuation.\n\nbefore he became president, ronald reagan—known as the great communicator—was a radio announcer a hollywood actor and governor of california.
Answer
Explanation:
Step1: Analyze the list structure
The sentence lists three roles of Ronald Reagan: "radio announcer", "a Hollywood actor", and "governor of California". In a series of items, commas are used to separate them, especially when the last item is preceded by "and".
Step2: Apply punctuation
We need to add commas between the first and second item, and between the second and third item (before "and" is optional but standard in a series). So the first blank (after "radio announcer") gets a comma, the second blank (after "a Hollywood actor") gets a comma.
Answer:
Before he became president, Ronald Reagan—known as the Great Communicator—was a radio announcer, a Hollywood actor, and governor of California.