选择方框里的单词，将短文补充完整。

 

sun   mountains   birds   river   flowers   what   rainbow   park   clouds   nice

    This is a nature  .There is a   and some   in the sky.There are two   flying in the sky.Look! There is a beautiful   between the two  .There is a long   on the grass.There are some   on the grass.  a   picture it is!