绿草地上坐满了人。

The ___grass is full of people sitting on it.

以前我们只有一个尘土飞扬的操场，现在我们有了一个草地。

Before, we only had a dusty playground, but now we have a ___grass field.

这些草在春天长得特别快，需要经常修剪。

The ___grass grows very fast in spring and needs regular trimming.