Answer:
I think it is because August mumbled "Hi" , and looked down at his feet.
Answer:
tell him playing with you is so fun if you will not play nor I will
"How to plant" is the indirect object because it's referring to the main idea without affecting the action.
The answer is 'his hair turns grayer' - that is the physical change which took place in the spirit of Christmas present from when he first appears in the story to when he leaves.