I and mom are talking outside our house 哪里错了?

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• the little boy entered the houseThe little boy entered the house,unhappy.His mother was 36 cakes in the kitchen.She smiled as she 37 but stopped when she saw his face.“ Tyler,38 happened?Is everything okay?”“Nothing is okay,Mom,” said the boy,“ Today,in our science lesson,Mrs Green was talking about the 39 .She said that the whole world is getting dirtier and that many animals and plants are dying.She wants us to think of something we can do to help.I
• I and mom are talking outside our house 哪里错了?
• I and mom are talking outside our house 哪里错了?
• 翻译：We should experience the present heart and soul while traveling.
• (1-sin^6a-cos^6a)/(sin^2a-sin^4a)