There are several chemical factories waste water into the river.A．pour
题型：不详难度：来源：
There are several chemical factories waste water into the river.
A．pour B．pouring C．pours |
答案
| B |
解析
本题的完整句子应为There are several chemical factories that/which are pouring waste water into the river,本题是同时省略主语和谓语，只留下pouring,故选Ｂ，Ｃ为第三人称的单数明显错误，因为前面的主语工厂是复数。 |
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