posted by John on .
1. Colors make up our world.
2. Our world is made up by colors.
3. Our world is made up of colors.
(What is the passive form of the active form #1? Is it #2 or #3? Are both grammatical?)
4. Is two-word verb composed of a verb and an adverb? What about a verb and a preposition? Can it be also called a two-word verb?)