Помогите  выбрать верный ответ6. At the end of busy day, sleep

Помогите выбрать верный ответ
6. At the end of busy day, sleep is the best way to restore your energy.
a) the b) a c)
7. Well go for a walk if weather is fine.
a) a b) c) the
8. Could you give me information I asked for in my letter?
a) the b) c) a
9. war is a terrible thing.
a) The b) с) А
10. I spent very interesting holiday in England.
a) the b) a c)