[ Modals of Obligation and Necessity ]
What does “don’t have to” mean?
A. It’s required.
B. It’s a strict rule.
C. It’s prohibited.
D. It’s optional.
Select your answer:
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Tenses › ViewWe ______ (study) for the test at the moment.
A. are studying
B. studying
C. studies
D. is studying
Perfect Tenses › View
What are the auxiliary verbs of the past perfect continuous tense?
A. has been
B. had been
C. was being
D. have been