[ Cardiology Services ]
The structure that prevents the backflow of blood in the heart is known as the____________.
A. septum
B. mediastinum
C. valve
Select your answer:
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Personal Pronouns and VerbAsking and Giving SuggestionPast Continuous TenseZero Conditional SentencePast Simple, Past Continuous, Past Perfect, Past Perfect ContinuousConjunctions & InterjectionsPast Perfect TenseVerbals and GerundsAnalogyOther quiz:
Grammar › ViewChoose the correctly written sentence (Capital Letters).
A. Séan wanted her to see me. After thinking about it, I refused.
B. séan wanted her to see me. After thinking about it, i refused.
C. séan wanted her to see me. after thinking about it, i refused.
Past Tense › View
Choose the Past Simple of this word.
wrap
A. wraped
B. wrapped
C. wraping
D. wrapping