Fill in am/is/are/was/were/wasn't/weren't/can/could/had or didn't have.

Fill in am/is/are/was/were/wasn't/weren't/can/could/had or didn't have.

1. A: Are you ten years old?
   B: No, I am not.
2. A: Can you swim when you were five?
   B: No, but I could.
3. A: Were there an airport here twenty years ago?
   B: No, there wasn't, but there were one now.
4. There were green fields here when I was little, but there are many now. There aren't any hotels or shops then.
5. We can't a supermarket then, but we can any department stores.