[ Tenses ]
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.

Random Topics:
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:
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
Grammar › View
Australia is big, but Canada is _________ Australia.
A. big
B. biggest
C. bigger than
