孩子们在沙发上蹦蹦跳跳直到妈妈喊停。

The children were ___bouncing on the couch until their mom told them to stop.

孩子们在院子里开心地拍打着皮球，看着它在地面上弹跳。

The children happily hit the ball and watched it ___bouncing on the ground.

那个婴儿看起来精力充沛，整天都在开心地玩耍。

The baby looks ___bouncing and happy, playing all day long.