[ Tenses ]
They ____ for a few minutes before the rest of the group arrived.
A. Are talking
B. Have been talking
C. Had been talking
D. Had waited

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Active & PassiveConnectivesGrammar Error Correction (Simple Present Tense)Sentence Structure and ConjunctionsConjunctions in Complex SentencesLinking Words and PhrasesFuture - be going toEmployment VocabularyInterjection & Prepositional PhrasesSuffixes (ing-ed) SentencesOther quiz:
Grammar › ViewWhich sentence uses the past continuous tense?
A. I am studying when the phone rings.
B. I will study when the phone rings.
C. I studied when the phone rang.
D. I was studying when the phone rang.
Past Continuous Tense › View
What were you doing last night when I _____ you?
A. was phoning
B. phone
C. did phone
D. phoned
Tenses › View. She was very upset because she _______ the opportunity to visit the museum when it was still open.
A. missed
B. had been missing
C. had missed
D. was missing
Grammar › View
My mother-in-law is _____ at our house this week.
A. stay
B. staying
C. be staying