2. You musn't ride through the stalls.
3. You can eat fried insects there.
4. You must throw empty cans in the bins. It's a rule !
5. You can have lunch there.
O sa iti explic si de ce le am folosit, can exprima o posibilitate iar la 3 si 5 asta se exprima chiar prin ,, it's possible'', must exprima o obligativitate, o regula, de aceea l-am folosit la 2 si 4