In Regards^x, Suffixes^x

Hi I am confused about the use of to or into--could you please help me out? I give my students questions like this: 1- By using suitable suffixes, change the following nouns to (into?) adjectives. Child, Fool, Danger, etc Change the following sentences to (into?) passive voice. By removing...

Hi people! Correcting is giving me a really hard time and I'd appreciate it if you could take some minutes to read this since you've been so helpful!! Here's the original version: In my point of view, Buenos Aires is less expensive than many cities in Europe. This is may be because our...