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Her parents and baby sister are waiting outside = present simple
her parents and baby sister = they
They weren´t waiting outside= past simple
in negative simple past verb to be
I was +not
you were +not
he , she it was +not
you were + not
they were + not
letter "B"
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Para mim:
Her parents and baby sister are waiting outside - Present continuous
Her parents and baby sister wait outside - Present Simple
Entao, O PAST SIMPLE não seria: Her parents and baby sister waited outside?
Verifico grande margem para recurso.
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Isso não seria past continuous?!
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A letra B é past continuous.
A alternativa A é a correta, simple past.