Please choose the correct ending to complete the given sentence: Building sandcastles: The children across the beach are putting sand in buckets, proud of their work. A girl dumps sand into a large bucket. a line of buckets filled with items

Ending1: perform tricks to throw the sand. Ending2: is running through the beach. Ending3: gather ready to dry, then a boy is whisked away by a helicopter. Ending4: are displayed on the beach as the kids gather behind them.

Answer format: ending1/ending2/ending3/ending4