"The river is approaching flood stage," he said. "The Army Corps of Engineers is sandbagging along the shore."

"Oh dear," said Grandma and she started to rub her hands together, which she did when she was really worried.

"Is that bad?" Julia asked. "What does sandbagging mean?"

"I know," shouted Robbie. He was always trying to prove he was smarter than his twin. "It means putting sand in bags!"

Julia scowled. "I knew that! But why?"

Robbie started to answer but no words came out of his mouth. Finally, he said, "I don't know why."

Both Grandma and Julia laughed because Robbie looked like a funny fish with his mouth opening and closing. When she stopped laughing, Grandma told them the sandbags would be stacked along the river to keep the water from flowing into the town.

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