She had written the book by the end of 1960.(对written the book提问)

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Shehadwrittenthebookbytheendof1960.(对writtenthebook提问)Shehadwrittenthebookbytheendof1960.(对writtenth

She had written the book by the end of 1960.(对written the book提问)
She had written the book by the end of 1960.(对written the book提问)

She had written the book by the end of 1960.(对written the book提问)
What had she done by the end of 1960?

what has she done by the end of 1960