Unit 2 Space InvadersI. Vocabulary:I. Explain the underlined part in each sentence in your own words. 1. drooping; loosened; slackened2. tone; sound3. already over-stimulated/ restless local people/ residents4. unfriendliness; cold-shouldering5. membership of a group or organizationII. Fill in the blank in each sentence with a word or phrase from the box in its appropriate form.1. sidled up2. carve out3. attribute4. stake a claim5. tread on6. plowed into7.