[ Grammar ]
According to the World Health Organization, _____ there to be an outbreak of any of the six most dangerous diseases, this could be cause for quarantine.
A. were
B. they were
C. there were
D. were they

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Prepositions › ViewChoose the word that is not a preposition.
A. Down
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Articles › View
Can you open _____ door for me, please?
A. the
B. a
C. an
D. –
