. Что нужно дельфинам? 2. Где живут дельфины? 3. Что им нравится? 4. Как быстро они плавают? 5. Как долго живут дельфины? 6. Опасны ли дельфины?​

1. he showed me his sister's paper. 2. she took her brother's skates. 3. Give me your students' notebooks. 4. Bring children's things. 5. Yesterday the children found a bird's nest. This is my friend's family. my friend's dad is an engineer. My friend's mother is a teacher. 7. Whose bag is this?This is Tom's bag. 8. Whose dictionaries are these? these are students' dictionaries. 9. Have you seen our teacher's book? 10. To meI like this boy's handwriting. 11. I hear my sister's voice. 12. I opened the window and heard the laughter and noise of the children.13. She put the boys' wet boots to the point of rudeness.14. This is my grandmother's chair.

Объяснение:

В множ. числе добавляется в конце ' а в единственном слово's

Надеюсь , удачки)