Fill in the blanks by using the collacation in the text. 1. He ______ across the nation for more than a third of his life. 2. 2. Twain found the ultimate expression of escape from life's regularities and the ______ clamor for success. 3. 3. What a robust people we might be, if we would only lay ourselves on the shelf and renew our ______ . 4. 4. the book version of his travels, The Innocents Abroad , became an ______ best-seller. 5. 5. He commented with a _______ sense of despair on men’s final release from earthly struggles. 6. 6. Two years later the opportunity came for him to take a ________ American look at the Old World. 7. 7. If readers expected the usual _____ travelogue, they were sorely surprised. 8. 8. He participated ________ in this life, listening to pilothouse talk of ... . 9. 9. Steamboat decks ______ not only with the main current of pioneering humanity, but ... 10. 10. Mark Twain gained a ______ perception of the human race.