Question

URGENTEEE!!!!!

9) Check the correct alternative:

9.1) Students in many schools___wear a cap. It's against the rules.

A) don't have to
B) mustn't
C) have to
D) must

Seria bom se tivesse as resposta de todas as questões da foto. Me ajudaria.​

Answer 1

Resposta:

9.1) Students in many schools mustn't wear a cap. It's against the rules.

9.2) People have to be over 18 to get a driver's license in Brazil.

9.3) You are not allowed to enter. So, you have to wait outside.

9.4) She mustn't work tomorrow. It's a holiday.

Explicação:

O must (mustn't) no negativo expressa uma obrigação, diferente do don't have, que é utilizado para conselhos.

Em relação ao afirmativo, eles praticamente possuem o mesmo significado, entretanto o must é mais formal. No 9.2. selecionei a opção have to porque não existe must + to.