0) I think we will leave on Friday. ✅
00) We are going to leave on Friday. — are leaving
1) My parents are going to buy a new bookcase because we have to keep some books on the floor. ✅
2) I think my friend is going to arrive at 7 o’clock. ✅
3) Maybe I will have time to cook dinner. ✅
4) Robin wants to win in the New Year dancing competition. She is going to practise dancing a lot harder till New Year’s Eve. ✅
5) Nellie is going to go to the voyage on board a huge ocean ship. ✅