[ 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

Random Topics:
Grammar - Countable/ UncountableTemporal Conjunctions and ConnectivesAdverb and Noun ClausesPresent Perfect SimpleTransitional Phrases and ConjunctionsNoun PhrasesGrammar - help/have/let/makeModals of Obligation & ProhibitionState Verbs and Action Verbsduring, for, whileOther quiz:
Vocabulary › ViewUse scissors to _____ the plastic wrap.
A. coast
B. pierce
C. accuse
Tenses and Time Markers › View
Who (do) the mess on the floor?
A. Who has done
B. Who have done
C. Who do
D. Who has did
