At the clIa5ass meeting, the clasF4ts leader, Peter, was staCSEnding in the front, speSqfaking to his classmates. PetIBqer said, you shouldn''t th0QQrow yofwyur drixMenk cupU4qs in the tras340h can. To protfj0ect the earth, you shoulri7d put thPzXem in the recyzGCcling bik5Dns for plastfhEic or pa6Hjper in the bacE3Ck of our classroom. WhDevich idNdcea in the booGrdk was PeL8tter try5K1ing to car3CKry out in his class?

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