Подчеркнуть подлежащее и сказуемое и в каждом предложении написать время.

Nature is the source of Man's life since ancient times. People lived in harmony with environment for thousands of years and thought that natural riches were unlimited. The development of civilisation increased man's harmful interference in nature.

1. Where is your luggage? I   have left it at the station. I * ll   take it tomorrow when Nick o comes to help me.

2. I  had been  reading  about an hour when he came.

3. The play has not yet  begun and the people were  talking in the hall.

4. Yesterday I  bought a new pair of gloves, as I  had  lost  the old ones.

5. We  were walking  in silence. He  had already  told me all that  was interesting about himself, and I  had nothing to tell him.

6. The moon  had  not risen yet, and only two stars, like two distant lighthouses, were shining in the dark blue sky.

7. One night a little swallow   flew over the city. His friends  had  flown away to Egypt six weeks before, but he  stayed behind.

8. What  have you been  doing these three months?

9. Our train starts late in the evening, so if you  come at seven o'clock, we*ll  still  pack our luggage.

10. When have  you  seen him last?

11. I  met him when he was walking  across the park.

12. Have you ever  acted on the stage? Why, yes, that's what I  have been doing for the last six years.

13. Don't enter the bedroom! The child  is  sleeping there, and he always  wakes up when somebody  opens the door.

1. Where is your luggage? I have left it at the station. I will take it tomorrow when Nick comes to help me. 2. I had been reading about an hour when he came. 3. The play had not  begun yet and the people were talking in the hall. 4. Yesterday I bought a new pair of gloves, as I had lost the old ones. 5. We were walking in silence. He had already told me all that was interesting about himself, and I had nothing to tell him. 6. The moon had not risen yet, and only two stars, like two distant lighthouses were shining in the dark blue sky. 7. One night a little swallow was flying over the city. His friends had flown away to Egypt six weeks before, but he had stayed behind. 8. What have you been  doing these three months? 9. Our train starts late in the evening, so if you come at seven o'clock, we will still be packing our luggage. 10. When did you see him last? 11. I met him when he was walking across the park. 12. Have you ever acted on the stage? Why, yes, that's what I have been doing for the last six years. 13. Don't enter the bedroom! The child is sleeping there, and he always  wakes up when somebody opens the door.