[ Grammar - Punctuation ]
Barbara Bertha and Betty are sisters.
A. Barbara, Bertha, and Betty are sisters.
B. Barbara Bertha and Betty are sister’s.
C. Barbara Bertha and Betty, are sisters.
D. Barbara, Bertha, and, Betty are sisters.

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Tenses and Word FormationAdjective ClauseGrammar - some / anyUse of Prepositions or ConjunctionsFirst Conditional, Future Time ClausesProgressive Perfect and Simple Verb TensesPassive and Active VoiceFuture Perfect TenseConnectives (because, due to, owing to, because of)used to, be used to, get used toOther quiz:
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A. must
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Item 3 is an example of what modal form?
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