In terms of ______ one-third of the world’s bears, winter sleep is _____instinct caused by seasonal changes in weather and lack of food.
A . /; the B. /; an C. the; an D. a ; /
In terms of ______ one-third of the world’s bears, winter sleep is _____instinct caused by seasonal changes in weather and lack of food.
A . /; the B. /; an C. the; an D. a ; /
B