Make the sentences interrogative and negative. 1. mary can ski. 2. we can 3. they ride on a 4. it drinks 5. i am

1. Mary can't ski. Can Mary ski?

2. We can't swim. Can we swim?

3. They don't ride on a sledge. Do they ride on a sledge?

4. It doesn't drink milk. Does it drink milk?

5. I am not singing. Am I singing?