Of course, it wouldn't hurt to pick up your grammar book and just review certain structures so that you'll be more confident in using them during the exam.
At their height, these lynchings took place out in the open; attracting huge crowds of smiling whites, who held their children up to get a good look at the mutilated body.
But if you go on to the Atlas of the World's Languages in Danger through the UNESCO website, you'll see a little " r" right next to that language right there.
Not all sounds made by animals serve as language, and we have only to turn to that extraordinary discovery of echo-location in bats to see a case in which the voice plays a strictly utilitarian role.