阳光明媚的一天，孩子们玩得很开心。

It's a sunny day, and the children are having ___fun.

在沙滩上玩沙子真的很有趣。

Playing with sand at the beach is really ___fun.

孩子们在公园里玩耍时总是充满乐趣。

The kids always have lots of ___fun when playing in the park.

游乐园总是充满乐趣。

The amusement park is always full of ___fun.