All the 20 linking verbs are: am, appear, are, being, been, become, be, seem, stay, sound, smell, was, were, taste, turn, is, remain, grow, look, feel. Became is the past tense for become.
true. if you ask what kind of something you would have to use an adjective to describe it. what kind is also an adjective as well as how many. they are describtive characteristics