4 Complete the texts with may / might) could, must or can't. It's an animal and it can fly. be a bird or it? be an insect. It have wings. It be an elephant! It's got two wheels and it goes 60 kilometres per hour. Its be a car. It be a bicycle. It? be a motorbike It's a warm place where you can swim. It be a river or the seaside. It a be a swimming pool. It be a bath because that would be too small to swim in! 10
5. It could have wings. (There is a possibility that it has wings.)
6. It can't be an elephant! (It is impossible for it to be an elephant.)
7. It could be a car. (There is a possibility that it is a car.)
8. It might be a bicycle. (We are not sure, but this is one possible option.)
9. It could be a motorbike. (There is a possibility that it is a motorbike.)
10. It may be a river or the seaside. (These are possible options.)
11. It could be a swimming pool. (There is a possibility that it is a swimming pool.)
12. It can't be a bath because that would be too small to swim in! (It is impossible for it to be a bath because it is too small for swimming.)