[ Present Tenses ]
Currently, experts ___ the impact of artificial intelligence on the workforce.
A. are studying
B. have been studying
C. study
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Tenses › ViewBats _________ nocturnal.
A. is
B. are
C. was
D. were
Vocabulary & Grammar › View
. What is most directly related to “health”?
A. A struggle to win a prize
B. A person’s physical and mental well-being
C. A major rebellion
D. A creative invention
Articles › ViewThey’ve got ….. very big house.
A. the
B. a
C. an
D. zero article
Grammar › View
Did you see ____ dog?
A. there
B. they’re
C. their