nhầm chỗ r b 

1.who

2.which

3.which

4.who

5.whose

1. rains
2. fly
3.fries
4. closes
5.tries-don't think
6. passes
7.is-watch
8. writes
9. d0 you speak
10.doesn't live

0-presence

1-extinction

2-essential

3-breeding

4-composition 

5-detectable

6-pleasing

7-suspect

8-survival

9-covering

10.threatened