The two words in the above sentence which are predicate adjectives are d. dry and e. smooth.
A predicate adjective is similar to a subject adjective. It modifies the subject of the sentence. It is also sometimes called a subject complement because it adds to or complements the subject. It adds an attribute to a subject. For example, a simple sentence is:
I love cars.
The object is "I", the verb is "love" and the subject is "cars". The predicate is a combination of the verb and the subject. If I add the word "red" to the sentence ie.
I love red cars.
I am describing the cars as being red. Therefore, in this case the predicate adjective is the word "red".