5. Choose the correct sentence in each pair.

1. b I think this might be difficult to do. 2. b They might to be beautiful! 3. a I thought that you might want to come to my house to play the game with me. 4. a She's smiling. She must be so pleased with her new pet rabbit. 5. b I thought that the exhibition about the future of your city might be very interesting. 6. a There's a new job available at the café. It could be just what you're looking for.