What this skill covers
This skill covers sentence-level grammar: joining two complete ideas correctly instead of running them together, avoiding sentence fragments, and making sure a verb agrees with its true subject, even when other words come between them.
For agreement questions with "neither...nor" or "either...or," the verb agrees with the closer of the two subjects — a common trap TSIA2 tests directly.
Worked examples
Example 1
Choose the version that correctly fixes the run-on sentence: "The lab results arrived early the team began analysis immediately."
A. The lab results arrived, early the team, began analysis immediately.
B. The lab results arrived early, so the team began analysis immediately.
C. The lab results arrived early the team began analysis immediately.
D. The lab results, arrived early the team began analysis immediately.
Why: A comma plus a coordinating conjunction ("so") correctly joins the two independent clauses. The other choices leave the run-on unfixed or insert commas in places that don't separate the two complete ideas.
Example 2
Choose the grammatically correct sentence.
A. Neither the manager or the employees were aware of the change.
B. Neither the manager nor the employee's were aware of the change.
C. Neither the manager nor the employees were aware of the change.
D. Neither the manager nor the employees was aware of the change.
Why: With "neither...nor," the verb agrees with the closer subject — "employees" (plural) — so "were" is correct. The third choice wrongly pairs "neither" with "or" instead of "nor," and the fourth adds an incorrect apostrophe.
How to practice this on TSI Practice Prep
Open TSIA2 Practice to answer original TSIA2 questions on Sentence Structure & Grammar, get an explanation for every choice, and see this skill tracked separately in your progress and mistake review.
Practice score estimates are learning indicators, not official scores or admission guarantees.