##  [That or which: It’s all relative!](/en/quiz/that-or-which-Its-all-relative-eng)

Do you have problems choosing between the relative pronouns **that** and **which**? Many people do. Here's a tip: Use **that** to introduce adjective clauses that provide essential information about the noun they modify. Use **which** to introduce adjective clauses that merely provide additional, non-essential information. (A non-essential clause beginning with **which** is set off with a comma or commas.)

1. Alan bought the puppy ![Placeholder for the answer](/sites/default/files/underscore_15_black-wet.gif) reminded him of his lost pet.that

, which

2. Alan plopped down on the couch beside his new puppy ![Placeholder for the answer](/sites/default/files/underscore_15_black-wet.gif) immediately snuggled up to him.that

, which

3. Rosemary bought the blue and white floral-patterned dress ![Placeholder for the answer](/sites/default/files/underscore_15_black-wet.gif) matched the shade of her best shoes.that

, which

4. Rosemary bought the dress ![Placeholder for the answer](/sites/default/files/underscore_15_black-wet.gif) was displayed in the window.that

, which

5. The photo ![Placeholder for the answer](/sites/default/files/underscore_15_black-wet.gif) Graham took won first prize.that

, which

6. Amalia was reading Nancy Huston's novel **Fault Lines** ![Placeholder for the answer](/sites/default/files/underscore_15_black-wet.gif) completely engrossed her.that

, which

7. Jean-Luc was reading the book ![Placeholder for the answer](/sites/default/files/underscore_15_black-wet.gif) Amalia had read the day before.that

, which