When do we use past perfect continuous tense?
A. When we want to emphasize the duration of an action that started before a certain point in the past and continued up to that point.
B. When we want to talk about present events
C. When we want to describe future actions
D. When we want to emphasize the suddenness of an action

Random Topics:
Distinguishing Future TensesGrammar: Defining Relative ClausesMesopotamia VocabularyCommunicative GrammarGrammar - First ConditionalVerb AbilityNounModal Auxiliaries and To Be VerbsPreposition FormPast SimpleOther quiz:
Grammar › ViewHe is going to _______ (play) basketball with his friends.
A. playing
B. played
C. play
Modal Verbs › View
You …. smoke inside the school.
A. can’t
B. mustn’t
C. shouldn’t
D. don’t need to
Grammar › ViewWhich part of speech shows location or condition? (It is usually followed by a noun or phrase.)
A. adjective
B. noun
C. preposition
D. conjunction
Modals and Present Tenses › View
A: You _____ wash those strawberries. I have already washed them. B: Oh, good. Thank you.
A. don’t have to
B. must
C. couldn’t
D. can
