She/publish / first poem / time / eight A. She was publishing her first poem by the time she is eight. B. She published her first poem by the time she had been eight. C. She had published her
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She/publish / first poem / time / eight
She was publishing her first poem by the time she is eight.
She published her first poem by the time she had been eight.
She had published her first poem by the time she was eight.
She has published her first poem by the time she has been eight.