Type the present perfect forms of the given verbs to complete the sentences/ My sister have this job since June.

The correct sentence using present perfect form should be: "My sister has had this job since June."

Explanation:
In the original sentence, the verb "have" is used incorrectly. Instead of "have," we should use "has" because the subject "my sister" is in the third person singular form. Since we are talking about an action that started in the past and is still ongoing, we use the present perfect tense.

Step-by-step solution:

1. Start with the subject "my sister."

2. Add the helping verb "has" because the subject is in the third person singular form.

3. Add the main verb "had" in its past participle form after the helping verb "has."

4. Reword the sentence to make it grammatically correct using the present perfect tense: "My sister has had this job since June."

By following these steps, we ensure that the verb form matches the subject, and we use the correct tense to convey the intended meaning.