pandemic – n. a disease that spreads across countries and usually affects large numbers of people

opportunity – n. a chance; a series of events that makes it possible to do something

virtual – adj. existing or done on computers or on the Internet

crazy – adj. wild and uncontrolled

cycle – n. a series of events that are repeated in the same order

volume – n. a level or power of sound

review – v. to study or examine

tolerate – v. to let or permit something to exist, happen, or be done