must: You __ have a passport to go to the USA., You __ go to school., You __ wear a seat belt in a car., You __ buy a ticket on a bus or train., mustn't: You __ use your mobile when you're driving., You __ leave a shop without paying.,

Tabela de classificação

Tema

Opções

Alternar o modelo

Interativos

Restaurar arquivo salvo automaticamente: ?