[ Passive Voice ]
Polio vaccines ___________________ in Brazil since 1980.
A. are given
B. were given
C. have been given
D. give

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Phrase vs Clause › ViewA group of words that has a subject and verb is a…
A. phrase
B. clause
Grammar › View
Choose the correct auxiliary verb
…… you like another cup of coffee?
A. Should
B. Would
C. Shall