2. I'll join you later. - спонтанное решение
3. Our people aren't going to have so many trips. (принятое решение)
4. The plane is going to arrive tomorrow afternoon.(расписание)
5. I won't do it again. (обещание)
6. I'm not sure, but I think Lewis Hamilton will win. ( после I'm not sure - will - решение не принято заранее, а в момент речи)
Объяснение:
