lennie is drinking to much water. And george yells at him for drinking to much.
The men are playing horseshoe
George yells at lennie because he keeps asking for ketchup when they dont have any.
Lennie kills curle's vife
George ask to tend rabbits, and lennie tells him he will.
Lennie gets shout in the back of the head by the the river
All of the men are playing a horseshoe game, when lennie and curley's wife isn't
Lennie is touching curley's hair when she tells him stop but he freaks out she screams and lennie yells at her and tells her to be quiet or else he will get in trouble. But she doesnt and he snaps her neck.
George shoots lennie in the back of the head so that he doesnt get worse after killing the wife.