[ Grammar ]
Parrots and crows …….. the most intelligent birds.
A. Were considering
B. Are considered
C. Considered
D. Was considered

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Grammar › ViewAlthough the alcohol level in beer ___ ranges from 4-7%, it can go as high as 15%.
a. usual
b. unusual
c. usually
Vocabulary & Grammar › View
Every time Fred runs ___ of money, he asks Sam to lend him some.
A. out
B. over
C. up
D. about