问题描述：
If we ___ now to protect the environment, we'll live to regret it
If we don’t act now to protect the environment, we'll live to regret it ? 一句话只有一个谓语动词, act
protect live 怎么有三个谓语动词? 我英语很烂,请高手帮忙
If we don’t act now to protect the environment, we'll live to regret it ? 一句话只有一个谓语动词, act
protect live 怎么有三个谓语动词? 我英语很烂,请高手帮忙
问题解答：
我来补答展开全文阅读