before -ing ...
2. Think carefully before answering the question. / Before answering the question, think carefully.
3. Mary put on her glasses before reading the letter. / Before reading the letter, Mary put on her glasses.
4. The man took off his coat before getting into the car. / Before getting into the car, the man took off his coat.
after -ing ...
5. We were very tired after walking for three hours. / After walking for three hours, we were very tired.
6. I felt sick after eating too much chocolate. / After eating too much chocolate, I felt sick.
7. I understood the book better after reading it a second time. / After reading the book a second time, I understood it better.
8. John worked in a department store for two years after leaving school. / After leaving school, John worked in a department store for two years.
2. A serial is a long story whose parts are presented on television or radio. 3.1 have always admired Julia’s hair. — Oh, yes, it is so beautiful. 4. The famous explorer gave a series of talks at our school. 5. Robert Weston is a popular broadcaster. 6. Do you agree that media influence and form the public opinion? 7. The new serial is based on his latest bestseller. 8. Ron is spying for Walter Mason, he is spying on his detective agency. 9. The police has arrived. 10. These datum are very important. 11. Radio is a media of communication.