III . Complete the sentences with at, on, in.

a) We visit our grandparents …….. the weekend.

b) I usually get up ……. 7 o’clock ……. the morning.

c) They play football ……. Sundays.

d) My mum’s birthday is …….25th May.

e) It often rains ……. autumn.

f) Let’s meet …….. the evening.

g) I never watch TV …….. night.