Question

The inflectional morpheme ending -ing is added to 1)adjectives, 2)adverbs, 3)nouns, 4)verbs 5)none

Answer 1

4) Verbs 
Google Answer:
Verb tenses: adding -ed and -ing. The basic form of a verb is called the infinitive. It normally occurs with the word to as in 'I want to ask you a question.' Verb smay change their spelling according to which tense is being used.