Insert a or an if necessary

Ex5. Insert a or an if necessary.
1. My neighbour is ___________photographer; let's ask him for ___________advice about
colour films.
2. A: We had ___________fish and ___________chips for ___________lunch.
B: That doesn't sound ___________very interesting lunch.
3. I had ___________very bad night; I didn't sleep ___________wink.
4. He is . .. . vegetarian; you won't get ___________meat at his house. He'll give you
___________nut cutlet. Last time I had ___________nut cutlet. I had
___________indigestion.
5. ___________travel agent would give you ___________information about
___________hotels.