1. Who buys a lot of sweets every day?

Does Mary buy a lot of sweets every day?

What does Mary buy every day?

When does Mary buy sweets?

Mary buys sweets every day, doesn't she?

Does Mary buy sweets or cakes every day?

2. Who rides bike in summer?

Do the children ride bikes in summer?

What do the children do in summer?

When do the children ride their bikes?

The children ride their bikes in summer, don't they?

Do the children ride their bikes or scooters in  summer?

3. Who likes to read detective stories?

What does my friend like to read?

What kind of stories does my friend like to read?

Does my friend like to read detective stories?

Does my friend like to read detective or historical stories?

My friend likes to read detective stories, doesn't he?