3. New problems will inevitably arise as our society and economy develop.
4. She will be making a public appearance, signing copies of her latest novel.
5. The mother is watching over her sleeping child now.
6. It took me 3 hours last night before I finished my homework. 7. After searching for an hour, he found the book dealing with ancient Greece.
8. That little girl is terribly spoilt; her parents give her everything she asks for.
9. She is a talented musician as well as a photographer. 10. The invention of computer is considered to be a great technological breakthrough.
M2 U4 1. Because of over-hunting by human beings, many animals have died out.
2. After the plane landed safely, some people burst into laughter while others cried in relief.
3. While driving, you should pay attention to the road signs. 4. It is a well known fact that cigarettes contain many chemicals that will affect your health.