[ General Knowledge ]
Mineral that enables blood to carry oxygen.
A. Calcium
B. Potassium
C. Iron
D. Magnesium
Select your answer:
Random Topics:
Active-Passive VoicesVerb and PrepositionIntermediateConditionals / Unreal PastSimple Past - Irregular VerbsWish / If only ( Present)Tenses and ConclusionsConjunctionsSimple Future - PassiveOther quiz:
Past Perfect Simple › ViewAmelia paid for her train ticket again because
A. she had lost it.
B. she hadn’t taken her coat.
C. she hadn’t booked ahead.
D. she had drunk too much coffee.
Verb to Be Tenses & Object Pronoun › View
Choose the correct form of ‘to be’ in present tense: It _______ raining outside.
A. are
B. am
C. be
D. is