Answer:
1. has fixed
2.have attended
3. gone
4. have got
5. has paid
Explanation:
To get the present perfect tense of a verb, you should get the past participle of the verb (ex. Present tense: see Past tense: saw Past participle: seen) and add has/have/had before the verb.
1. Since the mechanic is singular, we will use has
2. Since Michael and Nick are plural, we will use have
3. Since he is singular, we will use has
4. Since they is plural, we will use have
5. Since Shella is singular, we will use has
Hope those helped :)