Diagnostic work. First Conditional

1. If a volcano ......, animals ..... away.

2. A volcano ....if magma ....up the earth's crust.

3. It .... difficult to breathe if gases.... into the sky.

4. If lava.... anything, it ....

5. If it ....., the students .....inside.

6. I ....on a raincoat if it .....

7. If the dog .... a cat, the dog ...toward it.

8.If I .... my grandparents this summer, we ... at old photographs.

9. If you ...some seeds, you ... some flowers.

10. If we .... on time, our teacher ...angry.

11. I ... TV if I .... time.

12. He .... outside if it ....