Oxford Discover Workbook 5 Answer Key Unit 2 [ Trusted » ]

Used for completed events (e.g., "People hunted bearded vultures in 1913").

Used for actions that started in the past and continue, or have present effects (e.g., "Sloths have existed for 60 million years"). Reading Comprehension & Critical Thinking Oxford Discover Workbook 5 Answer Key Unit 2

In Unit 2 of the Oxford Discover Workbook 5 , students explore the fascinating relationship between ancient civilizations Used for completed events (e