ABSTRACT
Its as a possessive adjective NEVER has an apostrophe. (See Apostrophes, pp. 80-81)
The dog knows its way home.
4. INTERROGATIVE – these are question words: which, what, whose. Which ball shall we use?
5. DEMONSTRATIVE – shows or demonstrates exactly which things are talked about:
this, that, these, those. Please put these books on that shelf.
