1. pression des pneus   brake   scooter   horn   tire pressure   Hint Half-n-half Clue   2. tricycle   gear lever   helmet   pump   tricycle   Half-n-half Clue   3. casque   tire   helmet   spoke   exhaust pipe   Half-n-half Clue   4. pédale   pedal   horn   wheel   handbrake   Half-n-half Clue   5. pompe   valve   pump   gear lever   scooter   Half-n-half Clue   6. rayon   spoke   pump   chain   tricycle   Half-n-half Clue   7. soupape   sprocket   handbrake   pump   valve   Half-n-half Clue