Complex sentence: After a while, Pingu goes to ask Mother again, but she still angrily says no. Pingu very angrily leaves, and starts moving the wood he's cut into the igloo, stacking it by the fire.
Split into simpler sentences: After a while, Pingu goes to ask Mother again, but is still denied. Pingu angrily leaves, and starts moving the wood he's cut into the igloo, stacking it by the fire.