Which choice completes the text so that it conforms to the conventions of Standard English?

The professor, along with her teaching assistants, ______ grading the exams.

Answer and explanation

Correct answer: B. is

  1. Step 1: Identify the simple subject: the subject is the singular noun professor.
  2. Step 2: Note that the intervening phrase along with her teaching assistants is an accompaniment phrase, not a compound conjunction.
  3. Step 3: Select the singular verb that agrees with professor: is.
Answer
is.
Why not the others: Are and were are plural forms that incorrectly match the plural noun assistants.

Practise more Standard English conventions.

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