Air pollution, together with overpopulation, ______ many problems in big cities today.

admin2008-12-30 52

问题 Air pollution, together with overpopulation, ______ many problems in big cities today.

选项 A、are causing -
B、is causing
C、are caused
D、is caused

答案B

解析主语是air pollution，为单数形式，根据主谓一致原则，谓语用单数。together with sth．不影响主谓的搭配。

转载请注明原文地址:https://jikaoti.com/ti/9WJGFFFM

英语

相关试题推荐

随机试题

最新回复(0)