Question

tengo que marcar la respuesta correcta de esta pregunta:

I_____ be rude to my parents . it's important to be polite

a) must
b) should
c) mustn't
d) haven't

porfaaa ayudaaa

Answer 1

C) Mustn't. That's the right answer to your problem

Answer 2

I mustn't be rude to my parents. It's important to be polite