3A

A)
1- He's very lazy. I'm sure he isn't going to pass his exams
2- Is your sister going to buy a new flat?
3-You´re going to be in class 3 next year.
4-we aren't going to go camping next summer. We are going to stay in a hotel.
5-When are they going to get married? In October
6-It´s very cold, but I don´t think. It´s going to snow today

B)
1-What are you doing after class today?
2- Is it going to rain tomorrow?
3- We're going to go /going away this weekend.
4-I'm meeting Susan this evening
5-Where are you going to stay /staying in Paris?
6-Hurry up! We´re going to be late.
7-She´s going to come / coming tonight