1
Where is the toilet?
To sign this, furrow your eyebrows to show you are asking a 'wh-' question. Sign 'toilet' by shaking your 'T' handshape, then sign 'where' by shaking your index finger side to side.
2
I need to use the toilet.
Point to yourself for 'I', sign 'need' by bending your 'X' finger downward, and finish by signing 'toilet' with your dominant hand in a shaking 'T' handshape at chest height.
3
The toilet is down the hall.
Sign 'toilet' using the shaking 'T' handshape with your palm facing outward. Then, point down the hallway or in the direction of the restroom to clearly show where it is located.