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 I'm imagining your new house and it might be wonderful. b I'm imagining your new house and it must be wonderful.
5 a I thought that the exhibition about the future of your city must be very nice. b I thought that the exhibition about the future of your city might be very nice.