Nonessential Clauses
Where should the commas be placed in the sentence: "The book which I borrowed from the library was very interesting."
The book, which I borrowed from the library, was very interesting.
Correct the sentence by adding commas: "My friend who lives next door is always ready to help."
"My friend, who lives next door, is always ready to help."
Provide the correct punctuation for the nonessential clause in the sentence: "Bob our team captain will lead us to victory."
"Bob, our team captain, will lead us to victory."
Revise the sentence by adding commas: "The concert that was held last night was fantastic."
"The concert, that was held last night, was fantastic."