Вставим глагол-связку am, is, are в предложения.
- This city <strong>is</strong> clean.
- This city and that city <strong>is</strong> old.
- My dress <strong>is</strong> on the bed.
- My dresses <strong>are</strong> on the bed.
- His funny puppy <strong>is</strong> under the tree.
- His puppies <strong>are</strong> in the flat.
- Eight red foxes <strong>are</strong> on the log.
- That red fox <strong>is</strong> on the log.
Ответ: смотри решение в ответе