[ Tenses ]
They ______ (argue) for hours before reaching a decision.
A. argued
B. had been arguing
C. have argued
D. were arguing

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Grammar: wishes and regretsComparative and Superlative AdjectivesActive & Passive VoiceAdverbial Clause of MannerAsking and Giving OpinionVerb Tenses and ModalsGrammar: so and suchTransitional WordsPresent Tense vs Past TenseTenses and Word FormationOther quiz:
Present Tenses › ViewThe people in the flat upstairs ____ (disturb) us every night this week.
A. disturb
B. are disturbing
C. have disturbed
D. have been disturbing
Modal Verbs › View
You ________________ be late for work.
A. Mustn’t
B. Must