[ General Knowledge ]
Mineral that enables blood to carry oxygen.
A. Calcium
B. Potassium
C. Iron
D. Magnesium
Select your answer:

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Past Continuous vs Past SimpleVerb PhraseSimiles, Metaphors, Personification and HyperboleAntonymsVerb TensePassive Voice and Relative ClausesPassive Voice in Past and Present TenseModal and Relative PhrasesThe Future Simple TensePast and Present TensesOther quiz:
Grammar › ViewTo ______________ should I show this document?
A. who
B. whom
C. why
D. what
Reported Speech › View
I’m going crazy! I can’t ______ so much confusion!
A. look up
B. keep up with
C. get over
D. give up
E. put up with
