[ Grammar ]
Katherine was lying on the sofa. She was tired because she ………….. hard.
A. had been working
B. had worked
C. was working
D. worked

Random Topics:
Countable QuantifiersBasic GrammarModals and Active and Passive VoiceVerbs & AdverbsModals for RecommendationsTransition WordsGrammar: SyntaxSuffixes and TensesPrepositional PhraseComparativesOther quiz:
Modal Verbs › ViewYou can’t take much on this trip, so you … buy a large suitcase.
A. mustn’t
B. have to
C. had to
D. don’t need to
COUNT - NONCOUNT NOUNS › View
We always start off our English class with a couple of grammar ______ .
A. exercise
B. exercises
Pronouns and Subject Verb Agreement › ViewHooray! Several of my drawings ________ displayed in the school art exhibit!
A. are
B. is
Comparisons › View
Her voice is ________ than her sister’s.
A. beautiful
B. more beautiful
C. beautifully
D. more beautifully
