Fill in the words in the correct form

• encourage,
• establish,
• expand,
• contract,
• determine,
• burn,
• renew,
• convert,
• blow,
• flow

1. All rivers
   [ ] into the sea or lakes.
2. We can
   [ ] solar, wind and hydroelectric power into electricity.
3. Students should be
   [ ] to use laptops at school to increase their computer skills.
4. Metals like iron
   [ ] when they are cooled.
5. I couldn't sleep with the sound of the wind
   [ ] in the trees.
6. The company Mr Smith works for is
   [ ] into Asia.
7. You need to
   [ ] your passport as soon as it is out of date.
8. It's sometimes difficult to
   [ ] what the weather will be like during the day.
9. The school in our town was
   [ ] in 1952.
10. A lot of the world's energy comes from
    [ ] fossil fuels.