What is the proper question tag: I have many duties a)haven't i b) hadn't i c)don't i

Reread lines 6-7 "the survivor." determine how the tone of these differs from the preceding lines (1-5)

Which of the following story descriptions most directly shares themes with the passage above

1. saved aronnax from drowning "an incident" 2. speed of the nautilus man-of-war 3. next to captain nemo conseil 4. electricity vigo bay 5. "a coral tomb" 20,000 leagues 6. the nautilus runs aground nemo's "thunderbolt" 7. episodes are connected by aronnax's quarters 8. captain nemo's "bank" cause 9. distance aronnax traveled on the nautilus "a fine death for a sailor" 10. captain nemo sinks for revenge 50 miles per hour