1) Ghosts......exist in this castle because a lot of people have seen strange things here. a) can't b) may 2) Lucy says her aunt's got psychic powers, but she .....be joking. a) can't b) could 3) "The Curse of Tutankhamun"........be a very good film - there's nobody famous in it. a) can't b) might 4) I don't believe a UFO landed in your garden! You .......be crazy! a) can b) must 5) There's a strange man in the photo, but you can't see him very clearly. It........be a ghost. a) could b) can't 6) It .......be raining outside - nobody's carrying an umbrella. a) can't b) may not 7) I don't know where your phone is, but it......be in your room. a) must b) may 8) They are tired this morning so they .......come out with us tonight. a) might not b) may 9) You ............ Josh in town. He's on holiday. a) could have seen b) can't have seen 10) Sheena passed the exam, so her answers ......... wrong. a) may have been b) can't have been 11) He ........... home. His backpack's still here. a) couldn't have gone b) might have gone 12) Brian has been half an hour late already. He ........ his train but I'm not sure. a) may have missed b) must have missed 13) They ......... to Africa. They are saving to buy a new car. a) might have travelled b) couldn't have travelled 14) David was so absent-minded yesterday. He ......... to lock the door when he was leaving. a) must have forgotten b) may have forgotten 15) The letter's not on the table. Dad ........ it on his way to work. a) could have sent b) couldn't have sent

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