Fill in: may, can, could, had to, didn't,
have to.
1 my grandfather
ride a
camel for miles when he was young.
2 you buy the book. you
could have borrowed it from the library.
3
i see your ticket, sir?
4 we call a taxi because
the buses from the airport weren't running.
5 we visit our cousins in
kazakhstan this summer, mum?