选择合适的词填空，使短文的内容完整，每词只能用一次，注意大小写的规范要求。
（tall, clean, colourful, lake, weekend, grass, brown, birds, mountains, green, near, flowers）
There is a nature park ______________ my home. I usually go to the park on the _______________. There is a big _____________ in it. There are many _____________trees by the lake. The water is ______________. There are many tall ______________ in the park, too. We can see many ________________ and trees on it. The flowers are ________________. The trees are _______________. I can see some _________________ in the sky.