Ex.2
1. No
2. No
3. Yes
4. No
5. Yes
Ex.3
1. It's a lion. It's dangerous. It's got a big mouth and big teeth.
2. They're flamingos. They've got (have got) long legs and long necks. They're pink.
3. It's a panda. It's gentle. It's got black and white fur. It eats leaves.
Ex.4
1. haven't
2. hasn't
3. aren't
4. isn't