1. The people will protect the environment now. The environment will be nice
--->If people protect the environment now, the environment will be nice
2. They don't have a map, so they get lost.
--->If they had a map, they wouldn't get lost
3. The storm destroyed many houses in this village last week
--->Many houses were destroyed by the storm in this village last week
4. Did they give food to homeless people last year?
--->Was homeless people given food last year?
5. Although the water was bad, the football match was not canceled
--->Despite the bad weather, the football match was not canceled
6. Many rivers and lakes are poisoned. Factories produce waste and pour it into the rivers and lakes (because)
---> Because factories produce waste and pour it into the rivers and lakes , many rivers and lakes are poisoned
7. Plastic bags are a major source of waste. We should not throw plastic bags everywhere
--->Plastic bags are a major source of waste, so we should not throw plastic bags everywhere
8. We won't hold the festival. It costs too much money (if)
--->If the festival didn't cost too much money, we would hold the festival
9. The tortoise was running. The hare was sleeping (while)
---> While the tortoise was running, the hare was sleeping
10. The girl worked hard. Her stepmother wasn't happy (although)
---> Although the girl worked hard, her stepmother wasn't happy