Не совсем корректная просьба, но всё же:
She has got a little dog
1. Does she have a little dog?
2. Who has got a dog?
3. What does she have?
4. She has a little dog,hasn't she?
5. What dog does she have?
He wants to buy a red bike because he like it
1. Who wants to buy a red bike?
2. What does he want to buy?
3. What color does he want to buy a bike ?
4. Why does he want to buy a bike?