Exercise 7, Plural forms.1 I go swimming on Saturdays.2 He watches

Exercise 7, Plural forms.
1 I go swimming on Saturdays.
2 He watches TV every day.
3 The dictionary is over there.
4 This watch is expensive.
5 Do you have a stamp?
6 She's our child.
7 He's an interesting person.
8 The school doesn't have a computer.
Прошу посодействовать, с некими предложениями совладала, но все одинаково решила написать чтоб себя проверить! Заблаговременно спасибо!