Carlos _________ _________ ___________ all day, so he had a ...

★ Past Perfect and Past Perfect Continuous Tense

Carlos _________ _________ ___________ all day, so he had a headache.

A. had worked

B. was working

C. has been working

D. had been working

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I was really hungry. I ……………………………………………. anything since the morning. (not eat)

A. haven’t eaten

B. hasn’t eaten

C. wasn’t eating

D. hadn’t eaten