Hi !
Answer :
Their offers sound very attractive, don't they ?
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<em>verb = offer (present, 3rd p. plural)</em>
<em>auxiliary = do</em>
<em>subject = they (their offers = plural /// his/her offer = it)</em>
<em>you form a tag with the auxiliary of the verb and the appropriate subject of the first part of the sentence in a negative form if the sentence (statement) is positive. </em>
<em>Affirmative tag if the statement is negative </em>
<em>(=> their offers </em><u><em>don't sound</em></u><em> very attractive, </em><u><em>do they</em></u><em> ?)</em>
<em>-</em>
<em>☺☺☺</em>
