Topics: Past Perfect and Past Perfect Continuous Tense
What are the auxiliary verbs of the past perfect continuous tense?
A. has been
B. had been
C. was being
D. have been
Select your answer:

Random Topics:
Some & AnyVerbs with Prepositions and ConjunctionsPast Perfect TenseGrammar - First ConditionalKinds of SentencesPast Simple, Past Continuous, Past Perfect, Past Perfect ContinuousPresent SimplePaired ConjunctionModal and Phrasal VerbsAdjectives & QuantifiersOther quiz:
Vocabulary & Grammar › ViewI can _______ his two-hour long speech in three words: we want war!
A. safeguard
B. summarize
C. mark
D. comment
Idioms › View
To “gather in” means to ___.
a. collect
b. give out
c. organize
