##  [That or which: Which is it?](/en/quiz/that-or-which-which-is-it-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.

1. Fall is a season ![Answer line](/sites/default/files/underscore_15_black-wet.gif) many Canadians enjoy.that

, which

2. The colourful foliage of the trees seems to brighten the sombre days ![Answer line](/sites/default/files/underscore_15_black-wet.gif) get shorter and shorter as winter approaches.that

, which

3. Hikers enjoy the flaming reds, bright yellows and deep oranges of the autumn leaves ![Answer line](/sites/default/files/underscore_15_black-wet.gif) make the landscape seem on fire.that

, which

4. The Lauriault Trail in Gatineau Park is a hike ![Answer line](/sites/default/files/underscore_15_black-wet.gif) most beginners can enjoy.that

, which

5. An Algonquin elder built the birch bark canoe ![Answer line](/sites/default/files/underscore_15_black-wet.gif) is on display in the Gatineau Park Visitor Centre. that

, which

6. The neighbours' mounds of fallen leaves ![Answer line](/sites/default/files/underscore_15_black-wet.gif) they had carefully raked together earlier, became a playground for the children.that

, which

7. The dried-out leaves ![Answer line](/sites/default/files/underscore_15_black-wet.gif) crunched beneath our feet were clear evidence of an approaching winter.that

, which