Заполните артикли a/an, где это необходимо. выберите правильный ответ.

1. teenagers like to listen to music.
2. could i have glass of water?
3. trafelgar square is the most famous square in london.
4. niagara falls are the most poweful waterfalls in north america.
5. simpson desert is situated in the center of australia.
6. they say exotic animals where first taken to britian in the 13th century.
7. tea is britain's favorite drink.

варианты:
a) нет артикля.
б) a.
b) an.
г) the.