"A backpack?" In order to maintain the balance of the wooden raft on both sides, Catherine and Ava, in the other direction, dared not move recklessly and could only watch helplessly as the three girls and Pannis huddled together at the edge of the raft, peering down, asking in surprise, "What backpack?"
"Just a backpack." Pannis answered very seriously, "You know, the kind that you carry on your shoulders, the big one that can hold lots of stuff."
"Thanks a lot, but I know what a backpack is." Catherine said, rolling her eyes, "Tell me something I don't know, like why there would be a backpack here?"
"The problem is, what you don't know, I don't know either." Pannis shrugged innocently, "Actually, I'd also really like to know, why would there be a backpack there?"