孩子们在沙滩上欢快地嬉戏玩耍。

The children were ___frolicking happily on the beach.

小狗们在草地上欢快地嬉戏玩耍。

The puppies were full of joy and ___frolic on the grass.

孩子们在公园里嬉戏玩耍，充满欢乐。

The children were full of ___frolic as they played in the park.