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

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

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

选that contain表示强调,强调含有过量氟化物的饮用水对人体的影响