第一个选用【have】,因为【environmental issues】是可数名词复数
而第二个空我建议采用【is has】,因为后面谈到【环保工作包括.】,因此用【it】来表示一个整体.
那为什么第一个不用【整体的概念】呢?是因为已经表示出了有【issuses】这个词,已经是复数概念了,因此不能用单数.
祝你学习进步,更上一层楼!
不明白及时追问,满意敬请采纳,O(∩_∩)O谢谢~~
英文作文 求改错enviromental issues has (have?) never been about ras
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