Нужно вставить “it’s” или “its” .
1. The weather is nasty: it's raining and ... very cold.
2. The cat drank ... milk and ran away.
3. The jug is nice, I like ... not sure I like ... shape but I'm colour.
4. ... a faraway country. It will take us about ten hours to fly there.
5. A cat and ... kittens live under our cottage.
6. Trafalgar Square in London is ... graphical centre.
7. I haven't seen the document yet. I don't know what kittens live under our cottage. geo - ... about.
8. I like this toy. Can you tell me what ... made of?

1. The weather is nasty: it's raining and it's very cold.
In this sentence, "it's" is used as a contraction of "it is" to indicate that the weather is both raining and cold.

2. The cat drank its milk and ran away.
In this sentence, "its" is used as a possessive pronoun to show that the milk belongs to the cat.

3. The jug is nice, I like its shape but I'm not sure I like its colour.
In both instances, "its" is used to indicate possession. The first "its" shows that the speaker likes the shape of the jug, and the second "its" shows that they are unsure about liking the color of the jug.

4. It's a faraway country. It will take us about ten hours to fly there.
In the first sentence, "It's" is a contraction of "It is" to indicate that the country is faraway.

5. A cat and its kittens live under our cottage.
Here, "its" is used to show possession. The kittens belong to the cat.

6. Trafalgar Square in London is its geographical center.
In this sentence, "its" indicates possession. The geographical center belongs to Trafalgar Square in London.

7. I haven't seen the document yet. I don't know what it's about.
In the second sentence, "it's" is a contraction of "it is" to express that the speaker does not know what the document is about.

8. I like this toy. Can you tell me what it's made of?
Here, "it's" is a contraction of "it is" to ask what the toy is made of.

In summary, "it's" is a contraction of "it is" and is used to talk about an action or describe a situation. On the other hand, "its" is a possessive pronoun used to show that something belongs to or is associated with an inanimate object or animal.