[ Modals ]
Error Analysis
Employees can using the company gym during office hours, but they cannot bring guests without prior authorization from the facilities manager.
A. can
B. using
C. cannot
D. bring

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Modal Verbs › ViewStudents _____ follow the guidelines for the research paper assignment.
A. can
B. will
C. must
D. shall
Passive Voice › View
They had a boy _________ that yesterday.
A. done
B. to do
C. did
D. do
TOEFL Adjective and Adverb › ViewCeremonial rituals played a crucial role in . . . . ancient American Indian cultures.
A. many of which
B. many of
C. many of them
D. many
Modal and Phrasal Verbs › View
It’s a secret. You ….. tell anyone.
A. needn’t
B. shouldn’t
C. wouldn’t
D. mustn’t