1.When heated,water changes into steam.----When it is heated,water changes into steam.
2.Moved by his honest,we agreed to his suggestion.
---Becaude/As we were moved by his honest,we agreed to his suggestion.
3.What's the language spoken in that area?
---What's the language that is spoken in that area?
4.We've already reached the target set in the program/
---We've already reached the target that/which was set in the program.