Exercício com Past Perfect Continuous em Inglês

Assinale a alternativa correta usando o "Past Perfect Continuous" (Passado Perfeito Contínuo) em inglês.
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We __________ for six hours when she woke us up.
Possíveis Respostas:
__________ her for long when they moved to London?
Possíveis Respostas:
She __________ at the station for 40 minutes when the train arrived.
Possíveis Respostas:
I __________ to get tickets for that play before my fiend got them.
Possíveis Respostas:
He was angry because he __________ for more than half an hour when I arrived.
Possíveis Respostas:
I __________ long when there was a knock at the door.
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She said she __________ to call me all day.
Possíveis Respostas:
I told you I __________ for some new clothes.
Possíveis Respostas:
I was a good time to invest. Inflation __________ for several months.
Possíveis Respostas:
Before I changed job __________ on a plan to reduce productions costs.
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