语法分析--选择正确的项填空--containing--that contain

问题描述:

语法分析--选择正确的项填空--containing--that contain
Drinking water.excessive amounts of fluorides may leave a stained or mottled effect on the enamel of teeth.

填containing,后置定语,修饰drinking water,“含有”过量氟化物的饮用水
有A、B、C选项吗?为什么我没看到