3, If our grandparents didn't live far from us, we would visit them very often.

4, If people hadn't used too many cars for transportation, the environment wouldn't have been seriously polluted.

5, If she isn't shy, she will enjoy parties.

6, If there weren't flour, you wouldn't make a cake.

7, If you take more exercise, you will keep fit.

8, If I knew anything about the story, I would tell you how it ends.

9, If the wind weren't blowing hard, I would take the boat out for a rice.

10, Unless you are watching TV, don't leave it on.

$@angelinazuize$

$#hoidap247$

$#We are doing my best$

3. We don’t visit our grandparents very often because they live far from us.
-> if they live near us, we will visit our grandparents very often.
4. People use too many cars for transportation. That’s why the environment is seriously polluted.
-> If people don't use too many cars for transportation, the environment won't be seriously polluted.
5. She is shy, so she doesn’t enjoy parties.
-> If she isn't shy, she will enjoy parties.
6. You can’t make a cake without flour.
-> If there weren’t any flour, you wouldn't make a cake.
7. You should take more exercise because that’s the way to keep fit.
-> If you don't take more exercise, you will put on weight.
8. I don’t know anything about the story so I can’t tell you how it ends.
-> If I knew about the story, I would tell you how it ends.
9. The wind is blowing hard, so we won’t take the boat for a ride.
-> If the wind isn't blowing hard, we will take the boat for a ride.
10. Don’t leave the TV on if you aren’t watching it.
-> Unless you are watching TV, don't leave the TV on.