[ Cardiology Services ]
The root word arteri/o refers to which structure of the heart?
A. aorta
B. atrium
C. arterioles
Select your answer:
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Grammar › ViewBy the time we left the house, the ice ___________.
A. melted
B. had melted
C. did melt
Present Simple Tense › View
My sister’s name ……… Anna. She is a doctor.
A. are
B. is
C. do
D. does
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