Tag questions

She's from China town,-------?

Cars pollute the environment,------?

He didn't recognize me,---------?

Mr. Richard has been to Scotland recently,----------?

We're late again,----------?

You like chocolate very much,----------?

She went to the library yesterday,----------?

You aren't from Brazil,--------?

She doesn't work in a hotel,---------?

David and Julie don't take Chinese classes,---------?