Air pollution, together with littering, ____ many problems in our large industri
题型：不详难度：来源：
Air pollution, together with littering, ____ many problems in our large industrial cities today. | A．causes | B．cause | C．caused | D．causing |
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答案
| A |
解析
这题考查主谓一致的用法：主语被together with连接时，谓语应该和前面的主语一致，选A。 |
举一反三
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