Question 2. She asked me what was I doing to help protect the planet.

Question 3. Linda said that pollution was an impact of human activities on the environment.

Question 4. If Tom had a passport, he could travelled abroad.

Question 5. If there is no air or water, there would be no life on earth.

Question 6. She asked to me whether I liked to play with my pet pig.

Question 7. Dad told me he would get me a digital camera for my birthday that year.

Question 8. If you pass your examination, we could have a celebration.

Question 9. She said that she will help me with my homework after dinner.

Question 10. If I knew her number, I will call her immediately.

Question 11. He asked me if I know where to buy a birthday gift for his sister.

Question 12. If she studies harder throughout the semester, she would pass the final exam easily.