16. Escolha a frase correta com "have to": I __ go to work tomorrow. a) have to b) don't have to - c) should to d) will to 17. Escolha a frase que usa "don't have to" corretamente: You __ bring your lunch today because I will buy food for you. a) have to b) must - c) don't have to d) should 18.Complete a frase com a forma negativa de "have to": She __ wake up early on weekends. a) doesn't have to b) don't have to c) have not to d) haven't to 19.Escolha a opção correta para a frase: I __ clean my room because my parents told me to do it. a) have to b) don't have to c) should d) must 20.Complete a frase com "have to": We __ work on Saturday to finish the project. a) have to b) mustn't c) shouldn't d) don't have to

16. A frase correta é: "I have to go to work tomorrow." Portanto, a opção correta é a letra a) have to.<br /><br />17. A frase que usa "don't have to" corretamente é: "You don't have to bring your lunch today because I will buy food for you." Portanto, a opção correta é a letra c) don't have to.<br /><br />18. Para completar a frase com a forma negativa de "have to", a opção correta é a letra a) doesn't have to. Portanto, a frase completa seria: "She doesn't have to wake up early on weekends."<br /><br />19. A opção correta para a frase é a letra a) have to. Portanto, a frase completa seria: "I have to clean my room because my parents told me to do it."<br /><br />20. Para completar a frase com "have to", a opção correta é a letra a) have to. Portanto, a frase completa seria: "We have to work on Saturday to finish the project."