Сокращение it’s : 1. It’s/it is a nice day2. It’s/it is been a long time3. It’s/it has been raining all dayПритяжательное местоимение its :1. Every country has its own flag2. The dog buried its bone3. The cat injured its left paw(Сама когда-то писала эти примеры..ох..это было так давно..)