1measures to take 2a serious drought
3an eco protect
4an endangered species
5 weather changes​

1. By the time you arrive I (will have left).
2. Our family (has lived ) in this street since we got a new flat.
3. I (have heard ) of him ever since I was born.
4. Have you (seen ) this film?
5. I (have  not met ) my school friends for many years.
6. The students ( will have known ) the results of the exams by 3 o’clock tomorrow.
7. I hope you (will have come ) home from the University by 2 o’clock.
8. She has already (  done ) all her lessons.
9. He (will have  finished ) everything by the time you get back tomorrow.
10. They have just ( rejected ) our proposal.

1. By the time you arrive I will have left.
2. Our family has lived in this street since we got a new flat.
3. I have heard of him ever since I was born.
4. Have you seen this film?
5. I have  not met my school friends for many years.
6. The students will have known the results of the exams by 3 o’clock tomorrow.
7. I hope you will have come home from the University by 2 o’clock.
8. She has already done all her lessons.
9. He will have finished everything by the time you get back tomorrow.
10. They have just rejected our proposal.