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¡¡¡¡1. It is obvious that _______________________ (ÎÛȾµÄ¿ÕÆø) is harmful to our health. (pollute)
¡¡¡¡2. The wolf says ______________________________ (ÓÃÁîÈË¿Ö²ÀµÄÉùÒô) that he is so hungry and he will eat Master Dongguo as the meal. (frighten)