Future : will vs going to

Q1. I think it ________ rain tomorrow.

Q2. Look at those dark clouds! It ________ rain.

Q3. I ________ visit my grandparents next weekend.

Q4. The phone is ringing. I ________ answer it.

Q5. She has bought the tickets. She ________ to Paris.

Q6. I'm sure you ________ enjoy the film.

Q7. We ________ have a party for her birthday. Everything is ready.

Q8. Wait, I ________ help you with your bags.

Q9. He ________ study medicine at university.

Q10. I don't think they ________ arrive on time.