Escolha a alternativa que preenche os espaços:
1. The doctor_____get here as soon as he can.
a) must.
b) mustn't
c) have to
2. Do you____work next weekend?
a) have to
b) must.
c) mustn't.
3. Bicyclists_____remember to signal when they turn.
a) mustn't.
b) must.
c) has to
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a) must
b) have to
c) must
b) have to
c) must
meloluan0504:
obrigada
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