Parentheticals

Which sentence uses commas correctly?

• No one, I believe, should ever be homeless in this country.

• No one I believe, should ever be homeless, in this country.

• No one I believe should ever be, homeless, in this country.

Is the following sentence punctuated correctly? 
My doctor, who graduated from Harvard University, is very intelligent.

• Yes

• No

A parenthetical element is always necessary to a sentence's meaning.

• True

• False

• Sometimes

Which sentence is punctuated correctly?

• His face, red with rage, looked like a tomato.

• His face, red with rage looked like a tomato.

• His face red with rage looked like a tomato.

• His face red with rage, looked like a tomato.

Which sentence uses commas correctly?

• A) The car, which was red, sped past us.

• B) The car which was red, sped past us.

• C) The car, which was red sped past us.

• D) The car which, was red sped past us.

Is the following sentence punctuated correctly? My friend, who is a talented musician, plays the piano beautifully.

• A) Yes

• B) No

A parenthetical element is always necessary to a sentence's meaning.

• A) True

• B) False

• C) Sometimes

Which sentence is punctuated correctly?

• A) The book, on the table, is mine.

• B) The book on the table is mine.

• C) The book, on the table is mine.

• D) The book on, the table, is mine.

What is a parenthetical element?

• A) A necessary part of a sentence

• B) An optional part of a sentence

• C) A type of punctuation

• D) A type of sentence

Which of the following sentences contains a parenthetical element?

• A) The cat sat on the mat.

• B) The cat, surprisingly, sat on the mat.

• C) The cat sat on the mat, and purred.

• D) The cat sat on the mat and purred.