[ Mixed General Quiz ]
The ___ of the propellers could be hear for many miles.
a. were
b. where
c. whir
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Indefinite PronounPast Continuous TenseCoordinate Conjunction
Next quiz: Science
A branch of microbiology dealing with the identification, study, and cultivation of bacteria and with their applications in medicine, agriculture, industry, and biotechnology.
A. Bacteria
B. Bacteriology
C. Cytology
D. Sedimentology
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