Fill in the blank with the correct form of the auxiliary verb that satisfies the rules of grammatical concord.
Answer:Every member of the newly appointed advisory committees, together with the department heads, 【is】 required to attend the orientation session tomorrow.
Answer
is
The sentence subject is 'Every member', which is singular and requires the singular verb 'is'. The prepositional phrase 'together with the department heads' acts as an adjunct/parenthetical element and does not pluralize the subject.
Step-by-Step Solution
Key Concept
Subject-Verb Agreement with Indefinite Pronouns and Quasi-Conjunctions