Simple present or present continuous

Answers

1. Planting trees is a very good idea because trees produce oxygen.
2. He likes to spend time with his children.
3. Students should always try to improve their grades because universities do not accept those with bad grades.
4. Clouds form from evaporated water.
5. My sister teaches at a municipal school.
6. Volcanoes shoot, erupt hot lava into the air when they …………………..
7. Do you know how to ride a bicycle?
8. Supriya is an atheist. She does not believe in God.
9. Cows feed on grass.
10. Although I still have some difficulties in French, I understand much better now.