6complete the sentences with must, might or can't. 1 this ring be gold -it only costs £1.99! 2 lt be my book- it's got my name in it. 3 david isn't at school today. he be ill, but perhaps he's on holiday 4 alison's got lots of cats. she like them. 5 they be from yakutia, but i'm not sure. 6 he be scared of heights - he went climbing in the pyrenees last year.

1 This ring can't be gold -it only costs £1.99!
2 lt must be my book - it's got my name in it.
3 David isn't at school today. He might be ill, but perhaps he's on holiday.
4 Alison's got lots of cats. She must like them.
5 They might be from Yakutia, but I'm not sure.
6 He can't be scared of heights - he went climbing in the Pyrenees last year.