5. Choose the correct sentence in each pair. 1 a I think this can be difficult to do. b I think this might be difficult to do. 2 a They must be beautiful! 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. b I thought that you 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. b She's smiling. She can't be pleased with her new pet rabbit 5 a I thought that the exhibition about the future of your city must be very interesting. 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. b There's a new job available at the café. It must be just what you're looking for.