[ Grammar ]
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:
HomophonesToo / Very / SoPresent Perfect Continuous Tense Grammar and VocabulariesPossessive AdjectivesAdjective OrderPresent Simple and Continuous TenseSimple present/ past/ future tenseAdverbs by Type
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A. spend
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