First, remember the difference between 'may' and 'can'. 'May" asks or gives permission. "May I have a piece of cake? Yes, you may.' 'Can refers to the ability to do something. 'Can you lift this rock? Yes, I can.' 'Around' and 'about' are often interchangeable. 'It was around noon.' 'It was about noon.' Both indicate proximity. Strictly speaking, if you say, 'she walked around the house', you indicate that she avoided the house. In the same vein, if you say, 'she walked about the house', you indicate that she walked from place to place within the house. 'Around' can indicate avoidance. 'The mayor talked around the issue without addressing it.' 'About' can indicate the opposite. The mayor talked about the issue and proposed an answer.'