Nonessential Elements

I gave the book to our school's librarian who has dark hair. Do you need to use a comma?

• yes

• no

The man who spoke to me is my principal. Do you need to use commas?

• yes

• no

Blake Shelton who is a country singer is a judge on "The Voice." Do you need to use commas?

• yes

• no

Identify the nonessential element in the following sentence: "My brother, who is a professional chef, makes the best lasagna."

• My brother

• who is a professional chef

• makes the best lasagna

• None of the above

Which of the following sentences correctly uses a non-essential clause without punctuation errors?

• My cat, who is five years old, loves to play outside.

• My cat who is five years old loves to play outside.

Which sentence correctly uses a non-essential clause?

• The painting that is hanging in the museum was stolen.

• The painting, which is hanging in the museum, was stolen.

Choose the sentence that contains a non-essential clause.

• The students who study regularly perform better.

• The students, who study regularly, perform better.

Identify the non-essential clause in the following sentence: "The Eiffel Tower, which is located in Paris, is one of the most famous landmarks in the world."

• which is located in Paris

• is one of the most famous landmarks in the world

Choose the sentence where the non-essential clause is correctly punctuated.

• The teacher, who has been teaching for 20 years, is retiring.

• The teacher who has been teaching for 20 years is retiring.

Which sentence correctly applies commas to set off nonessential elements?

• The car that is parked outside, is mine.

• The car, that be is parked outside, is mine.

• The car, which is parked outside, is mine.

• The car which is parked outside is mine.