[ Cardiology Services ]
The structure that prevents the backflow of blood in the heart is known as the____________.
A. septum
B. mediastinum
C. valve
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ConditionalSubject Verb Agreement and Coordinating ConjunctionsSecond ConditionalWas & Were QuestionsAuxiliary Verbs & Question TagsPersonal Pronouns and VerbGerunds as Objects of PrepositionsMix-TensesGrammar - Capitalization and Possessive NounsVocabulary Spelling GrammarOther quiz:
Grammar › View______ United States working on global warming?
A. Is
B. Are
Tenses › View
The company ____ last year due to low sales.
A. went bankrupt
B. goes bankrupt
C. is going bankrupt
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Present Perfect Tense › ViewIt ____ snoweda lot this winter.
A. have
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Grammar › View
Identify the part of speech of the underlined word.
The best breakfast in town!
___
A. Noun
B. Pronoun
C. Verb
D. Adverb
E. Adjective