That means what's today's date.
So... You would say...
•Heute ist der 10 Januar 2017.
Answer:
3. it is raining
it is snowing
it is sunny
it is windy
it is cloudy
it is foggy
it thunders and lightning
5. it means you should answer them and compare them with the texts a-c
but my answer for number three is very sure though I started learning german few months ago
The second one
das ist kühl
Answer:
Mein Bruder interessiert sich fuer Tiere.