1. When are you going to phone him?
2.Why the tower is going to collapse?
3. How many friends are going to arrive?
5.When mum is going to see a dentist?
4. How much are we going to pay?
6. Why are you going to wear a white dress?
1)an , a ,
2)а ,an
3)an, a
4)an, a !
т.е . если следующее слово начинается на гласную , то предлог должен кончатся на согласную . А если слово после предлога начинается на согласную ,то тогда пишем просто :a
Я не знаю - I don't know ))
My birthday is on 15th of April. My last b-day party was really great! I had a lot of fun with my friends especially when we were playing hide-and-seek. I organized the party. Fist of all, I made a list with those who I want to see there, there were only the most close friends of mine. I made the invitations by myself and sent them by post. At the party we were talking a lot, making funny photos and of course we were playing mafia! We like it very much! It was a great surprise when my friends started singing a special song for me, just as in our childhood. I said them that I don't want any presents, as usual. It was really great! I like all b-day parties but that one was the best!
Я бы посоветовала перепроверить грамматики
"My attitude to the holidays"