Sad and remorseful would be the answer for this one ;)
1 (D) The loneliness of human beings
2 (A) The heron feeding on the snake in the pond
3 (D) The rabbits are part of George and Lennie's dream of one day having their own farm
4 (A) Flashback
5 (A) Time order/sequence signal words
6 (C) As a point of tension in the plot's rising action
Earth is an amazing place.
Stop wasting people's time by posting this things