The possessive form is Sue's typewriter.
your....
The typewriter belongs to Sue.
The possessive of a single noun is formed by adding 's, so this is correct! [see Essentials of English Grammar, by L. Sue Baugh, 2005, p. 57
The possessive nouns in the sentence are:Frank'sSue'sThe pronoun in the sentence is 'his', a possessive adjective describing the noun 'house'.
The possessive singular noun is explorer's. The possessive plural noun is explorers'.
The possessive form for the noun coyote is coyote's.
The possessive form of zoo is zoo's.
The possessive form for the noun preacher is preacher's.
The possessive form for the noun laboratory is laboratory's.
No, he is not possessive. The possessive form would be his.
The possessive form for the noun oxygen is oxygen's.
The possessive form for the noun coyote is coyote's.