А ставится, если последующее слово начинается с согласной буквы, а аn ставится, если последующее слово начинается с гласной буквы.
1) I see a funny elf and a nice troll.
2) Jimmy is an old grandad.
3) It is not a bee, it is an ant.
4) Is it lake? No, it is a little pond.
5) I can see a street, a lorry and a bus.
6) Is he an old man? No, he isn't
1. Dogs are given food in ten minutes.
2. Furniture is made of wood and plastic.
3. This work will be finished by tomorrow.
1) Who will you go to the music festival with?
2) Who will perform there?
3) How much does the ticket cost?
4) Where will this music festival take place?