Change the verb in the sentences into simple future form. Respect punctuation and use contractions in the negative form
WILL and BE GOING TO have basically the same meaning.

FORMS
Affirmative Negative Interogative
I will go I will not go= I won't go Will I go?

1) Jack is going to read two books for the test.

2) We aren't going to come to the party.

3) Jenny and I are going to leave early tomorrow.

4) Are you going to come to the party?

5) Maggie is going to stay at home and do her homework.