Fill in:in, at, on.
1 Some animals sleep ............ the morning.
2 My cat has his birthday ............ 5th July.
3 I usually take my dog for a walk ............ 5pm.
4 Some birds come out ............ night.
5 Pink dolphins never have babies ............ the
summer.
6 There is a good nature program on TV
....... Wednesday.​