[ Grammar ]
Carlos _________ _________ ___________ all day, so he had a headache.
A. had worked
B. was working
C. has been working
D. had been working
Select your answer:

Random Topics:
Adjectives and ArticlesPresent simple, Present continuous, Singular, PluralPrepositions of Time and PlaceParticiple AdjectivesAdjective / Noun + to InfinitiveUse of Prepositions or ConjunctionsAdjectives and PrepositionsTenses, Determiners & Subject Verb AgreementSentence CompletionVerb Types and TensesOther quiz:
Grammar › ViewEveryone at the party ___ given a name tag.
A. is
B. are
Continuous and Perfect Tenses › View
They__________________ over 40 kilometers and still there was no sign of the oasis.
A. are walking
B. had been walking
C. have been walking
