try to take a look with the underlined words in each sentence
1.what are the underlined words in sentence a,b,c,d, and e?
2. what is the subject in sentence a,b,c,d, and e?
3. what is the helping verb in sentences a,b,c,d, and e?
4. what do we add to the base form of the verb?
5. what is the -ing form of the verb in sentence a,b,c,d, and e?​