Dolphins aren't ugly. They are ____. Dolphins can't live in polluted water. They live in ____ water. Dolphins are ____. They aren't dangerous. A lot of the sea isn't clean. It is ____. Dolphins aren't ____. Dolphins have ____. They use the sounds to call their ____. We want to make the sea a ____ place for dolphins. They ____ with people. Dolphins are ____. They can stay under water for about ____.

Reading Unit 4 quiz

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