4000 Complete the dialogue. Choose the correct option from the pairs of phrases below. can't be expensive / must be expensive can't be fun/might be fun can't be lonely/could be lonely can't be right/may be right might be interested / must be interested must be scary/can't be scary A: Have you seen this brochure for an activity camp? B: Yeah, it looks good. It might be fun to go on a holiday like this next summer. What do you think? A: I agree. Do you think it costs a lot? B: No, it 2 because it's for young people and they don't have much money. A: That's true. What activities can you do? B: Well, there's climbing. I don't know if I want to do that. I think it 3 being up so high. A: Yes, you 4 about that, but the other activities look really good fun. B: Yeah, I love canoeing. Do you think Abbie 5 in coming too? Should we ask her? A: That's a good idea. I think it's definitely better to go with friends. It if you go on your own and you don't know anyone.