Read the following sentences. Check those you think are facts.
1. - Mark Twain had to start working at age twelve, when his father died.
2. Mark Twain was a riverboat pilot in Mississippi from 1857 to 1861.
3. Mark Twain's novel The Adventures of Huckleberry Finn is his best work.
4. The Adventures of Tom Sawyer was first published in 1876.
5. Mark Twain was the best writer of the nineteenth century.