[ General Knowledge ]

Mineral that enables blood to carry oxygen.

A. Calcium
B. Potassium
C. Iron
D. Magnesium

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Random Topics:
Later vs. LatterDespite, In Spite Of, Although, Even Though, HoweverPresent Continuous Tense

Next quiz: Grammar

She __________________ a prize by the jury at the Festival.

A. Gave
B. Won
C. Was winning
D. Was given

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