1. My friends' pet is in the box. .............. My friends' pet isnt ../is not ..............in the box.2. I'm eleven...I'm not / I am not ....eleven.3. He's got a scooter......He hasnt got / has not got ..........a scooter.4. My mother teaches children...........My mother doesnt/does not teach .......................children.5. They skate in the park.........They dont/do not skate .............in the park.