Which of the following sentences is an example of the past perfect continuous tense?
A. I have studied for the exam.
B. I had been studying for three hours before the exam.
C. I studied for the exam last week.
D. I was studying for the exam.

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Prepositions and ArticlesHabitual and Continuous TensesAdverbs, Infinitives, Definite ArticlePresent simple, Present continuous, Singular, PluralAdverb of TimeRun-On SentencesWH- Question WordsIdiom and TensesTenses & PrepositionPronouns and AdverbsOther quiz:
Grammar › ViewThe girl ________ eating _________.
A. is / ice cream
B. are / ice cream
C. is / water
D. are / glida
Modal Verbs and Conditionals › View
Which modals do we often use to talk about rules to say what you are allowed or not allowed to do?
A. can/can’t
B. have to/don’t have to
C. must/mustn’t
D. should/shouldn’t
Mixed Tenses › ViewI don’t think he ____________in the thirty years I _______________ him.
A. has changed/have known
B. had changed/have known
C. had changed/had known
D. has changed/knew
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Australia is big, but Canada is _________ Australia.
A. big
B. biggest
C. bigger than
