Respuesta:
1. there was an american girl.....etc.
2. there were some dictionaries .....etc.
3. there was a museum....
4. there were some posters......
5. there were twenty five.....
NEGATIVE
1. there weren't any computers....
2. there wasn't a cat......
3. there weren't books in the.....
4. there wasn't a supermarket....
5. there weren't any hats.....
INTERROGATIVE
1. Was there a car in.......?
2. Were there two kids.......?
3. Were there any books in....?
4. Was there a warehouse.....?
5. Were there any books in the boxes?