Please ex. 4. turn the sentences into the passive: 1. pandas can rear not more than eight cubs in her lifetime. 2. pandas pick their partners very carefully. 3. pandas eat bamboo stems. 4. human activity wiped out many bamboo forests. 5. people drove away pandas from their habitats. 6. chinese government developed a conservation action plan. 7. people can grow pandas in zoos. 8. perhaps, people will clone pandas in the future. 9. people will save