1. I look after … cat for a while. а) my sister b) my sister’s c) my sister’ 2. Do you know anything about … life? а ) socretes b) socrates’ c) socrates’s 3. Give me … paper, please. a ) yesterday’s b) yesterdays’ c) yesterday’ 4. This is the … room, but they are not at home. a ) boy’s b) boys’ c) boys 5. This is my … wife. a) brother’s-in-law b) brother-in-law c) brother-in-law’s