[ Modals and Active and Passive Voice ]
. Which modal verb expresses obligation?
A. can
B. may
C. must
D. might
Select your answer:
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Grammar & Vocabulary › ViewIf someone has agoraphobia, what are they afraid of?
A. crowds / public
B. dogs / wolves
C. snakes / venomous animals
D. public speaking
Grammar › View
Her employees … professional.
A. wasn’t
B. can being
C. weren’t