Is that a fast car?
Yes, it is.
Is that a slow car?
No, it isn't.
Is that a new truck?
Yes, it is.
Is that a dirty truck?
No, it isn't.
Is that an old bus?
Yes, it is.
Is that a clean bus?
No, it isn't.
Is that a long train?
Yes it is.
Is that a short train?
No, it isn't.
Is that a slow boat?
No, it isn't.
Are those fast cars?
Yes, they are.
Are those slow cars?
No, they aren't.
Are those new trucks?
Yes, they are.
Are those old trucks?
No, they aren't.
Are those clean buses?
No, they aren't.
Are those heavy buses?
Yes, they are.
Are those long trains?
Yes, they are.
