3 Choose the correct answers. 1 Look, that boy's standing up in the pool - it. be very deep. a may b can't c must 2 I guess this be Jack's umbrella, but I'm not sure. a must b can't c could 3 There are hundreds of deckchairs on the beach. It be a very popular beach! a must b might c can't 4 I'm not sure if the gym is open now - it. be closed. a can't b may c must 5 Camping be fun in the rain - I guess everything gets horrible and wet! a must b can't c could 6 I don't know where he's from. I guess he French. Or maybe Spanish. be a might 70 Unit 6 b must c can't