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ryone’s surprise, he contributed $5,000 to a local charity. ? Many different people contributed to the development of TV. ? Many verbs can be both transitive and intransitive. Practice P9 A ? 1. checked (vt.) ? 2. bought (vt.) ? 3. sitting (vi.) ? 4. see (vt.) ? 5. talked (vi.) ? 6. turned (vi.) ? 7. hurts (vi.) ? 8. eat (vt.) ? 9. thought (vt.) ? 10. smiled (vi.) P9 B 1. a. answer b. answer for 2. a. fail (in) b. fail 3. a. suffering b. suffered from 4. a. allow b. allow for 5. a. brought b. bring about 6. a. paid b. To pay for 7. a. Having searched b. searching for answer for to explain to people in authority why you did something wrong or why something happened, and be punished if necessary Their coach must answer for the team39。m suffering from a bad back. Mar