squirrel|squirrels

那只松鼠迅速地爬上了树。

The ___squirrel quickly climbed the tree.

我看到两只松鼠在树上追逐玩耍。

I saw two ___squirrels chasing each other in the tree.

我看到一只松鼠正在树上藏坚果。

I saw a ___squirrel hiding nuts in the tree.