Question

1. Write zero conditional sentences and questions .

1. If / climb a mountain / be there less oxygen ?

2. If / dog see cat / it chase it

3. birds not fly south / if the weather not be cold

4. fish die / if someone / take it out of water

5. If / your friend can't do their homework / you help ?

6. time go slowly / if / you not have anything to do

Answer 1

1. There is less oxygen, if you climb a mountain?
2. If dog see cat, it chases it

3. Birds don't fly south, if the weather isn't cold

4.Fish die, if someone take it out of water

5. You help, if your friend can't do their homework?
6. If you don't have anything to do, time goes slowly 

Answer 2

1. There is less oxygen, if you climb a mountain ?

2.If dog see cat, it chases it.

3.If the weather isn't cold, birds don't fly south.

4.Fish die, if someone take it out of water.

5.You help if your friend can't do their homework?

6.If you don't have anything to do time goes slowly.