Поставьте подлежащее во множественное число и сделайте все необходимые изменения:
1) This is a bird.
2) There is a table in the room.
3) That isn’t a goose.
4) This boy has a good coat.
5) He is a Frenchman.
6) Does your tooth still ache?
These are birds There are tables in the room Those aren't geese these boys have good coats they are Frenchmen Do your teeth still ache?