Synthesized answer
The provided passages do not contain information about what questions remain unanswered in "My Early Life." The passages only state the title of the book and its American edition title [1].
Synthesized from the book passages below. Chat with the book on Feynman for follow-up.
From the book
Title: My early life by Winston S. Churchill Description: American edition (New York, C. Scribner's sons) has title: A roving commission; my early life.