Ответ:
1 вправа:
...
Объяснение:
2 вправа:
1.suddenly
2. hard
3. happily
4. bad
5.well
6. generous
7.loud
8.easy
3 вправа:
1. Will the world's population gets smaller?
2.The weather will change in the next 50 years
3. Endangered animals won't survive without our help
4.Will there be enough food for everyone?
5. Energy will be more expensive by 2030.