In the author’s boyhood, therewas no necessity to ____ if he stayed out late at night.

In the author’s boyhood, did he have to carry keys with him if he stayed out late at night?

Mark Twain’s ______ tells a story of his boyhood ambitious to become a river boat pilot, up and down the Mississippi.

Bob could do nothing when ______. A: the customers complain B: Grandpa began to tell him about his boyhood C: he saw Grandpa feeling lonely