27 . What are people doing ? A. They are playing B. They are throwing rubbish . C. They are telling the story . D. They are cleaning the lake . 28.Why is it hard for the turtle to swim ? A. Because fish in the lake B. Because the tourists look him , prevent him . C. Because there is a plastic bag D. Because the turtle wants to climb up on the rock Littering is bad for ......... A. people B. animals C. trees around the lake D. people , animals and plants What is the correct settings of the story? A. The ocean . B. A pond C. A lake . D. A

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