Respuestas
Respuesta dada por:
2
Respuesta:
A.
1. They don't have to
2. a: Do British taxi drivers have to...
b: We have to --- but we don't have to
3. a: Do I have to...
b: No, you don't have to --but You have to help
4. a: Does your husband have to...
b: No, he doesn't have to --- but he has to speak.
B.
2. mustn't
3. don't have to
4. mustn't
5. mustn't
6. doesn't have to
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