lark|larking|larks

周末我们突发奇想去海边野餐，纯粹是为了好玩。

We went for a spontaneous picnic by the beach last weekend, just for a ___lark.

周末我们在公园里嬉戏打闹，纯粹是为了好玩。

We did some silly ___larking in the park over the weekend just for fun.

清晨，云雀在田野上空欢快地歌唱。

In the early morning, ___larks sing joyfully above the fields.