Topics: Cardiology Services
The SA node is responsible for which type of heart rhythm?
A. sinus
B. atrial
C. ventricular
Select your answer:

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Modals of Speculation and DeductionFirst Conditional, Future Time ClausesVerb Tenses and Sentence StructureVerbs + Gerund or InfinitiveInfinitives or GerundsVerbs and AdverbsPrepositions and Preposition PhrasesPast Simple, Past Continuous, Past Perfect, Past Perfect ContinuousAdverbial PhrasesPrepositions and Prepositional PhrasesOther quiz:
Simple Present and Simple Past › ViewNicky ______ at the zoo yesterday.
A. was
B. were
Grammar › View
The Present Simple is used for _______ .
A. past events
B. making a prediction
C. facts, habits, and daily routines
D. an action that is happening
