Question

Present perfect tense s+have/has+v3
1. some companies (use) windmills or other equipment that do not pollute the air
2. extreme water shortages, or droughts (occur) in gunung kidul for a long time
3. people (realise) that they should plant more trees
4. people (cut down) trees for fuel, and their fires release gas into the air



thanx

Answer 1

1. some companies have used windmills or other equipment that do not pollute the air
2. extreme water shortages, or droughts has occured in gunung kidul for a long time
3. people have realised that they should plant more trees
4. people have cut down trees for fuel, and their fires release gas into the air