Please choose the correct ending to complete the given sentence: Education and Communications: [header] How to work on fine motor skills [title] Squeeze play-dough or clay. [step] Working with play-dough or clay provides an opportunity to strengthen finger muscles by squeezing and stretching the material into different shapes. [substeps] Roll out the dough or clay and then pound it down.

Ending1: Test the shape of the dough to see if it feels secure to you. Keep pressing and stretching and eventually you can almost shrink the ball out of shape. Ending2: Make sure you cut the clay thin so the form is equal to your finger's size. Use your fists or a punching bag to punch the length of clay into an exact shape. Ending3: Stretch the dough or clay so as to make it even firmer. Use your hands to knead the dough. Ending4: Use other tools to shape the clay, such as popsicle sticks. Don't have any play-dough at home? No problem.

Answer format: ending1/ending2/ending3/ending4