Hi,
Please tell me if the words unerlined are unnecessary. If they are, please tell me how I can fix them, especially for the second sentence.
1. They are disposing of these things in our front lawns. The verb 'dispose' requires 'of'.
2. I think I am good and here are the reasons why. You can omit 'why', because the word 'reason' itself includes the concept of 'why'. However, people often say 'the reason why', possibly as a form of emphasis.
Best wishes, Clive