Acid, global, air, endangered, energywaste 2. …….species

3. …….pollution

4. …….warming

5. …….rain

1) Oleg said:" My room was on the second floor
2) He said:"He was sure she will ring his up when she is back in St. Petersburg."
3)Misha said: "He had seen them at his parents' house last year."
4)He said: "He had not seen his cousin today."
5)"She didn't go to this shop very often," she said
6)Tom said: "He already had breakfast, so he is not hungry."
7)He said: "He had just received a letter from his uncle."
8)"He was going to the theatre tonight," he said to me
9)Mike said: "He had spoken to Mr. Brown this morning."
10)He said to her that He shall do it  today if he has time." 
11)I said to them: "I could give you my uncle's address."

1. Oleg said that his room was on the second floor

2. He said he was sure she would ring him up when she was back in St Petersburg

3. Mishap said he saw them at his parents house 2 years ago

4. He said he hadn’t seen his cousin yesterday

5. She said she didn’t go to that shop very often

6. Tom said he had already had breakfast so he wasn’t hungry

7. He said he had just received a letter from his uncle

8. He said to me he was going to the theater that night.

9. Mike said that he had spoken to Mr Brown that morning

10. He said to her that he would do it yesterday if he had time

11. I said to them that I could give them my uncles address