春天到了，树叶又变成了绿色。

In spring, the leaves turn ___green again.

她总是选择环保产品来保护地球。

She always chooses ___green products to protect the environment.

尽管她很聪明，但在处理这类问题时还是显得很生疏。

Although she's smart, she's still ___green when handling this kind of problem.

高尔夫球场的绿色草坪需要精心维护。

The ___green on the golf course requires careful maintenance.