Номер 69.1
Нужно просто добавить где надо к словам a/an.

2 a music

3 a very nice restaurant

4 a toothpast

5 a toothbrush

6 a bank

7 an insurans company

8 a violence

9 a paint

10 a big hotel

11 a pertol

12 a problem

13 a very interesting idea

14 a interview

15 a good game

16 a jewellery

17 a beautiful necklace