This isn’t my sister’s skirt. ______ is blue.

—How do you like the book you read yesterday?—Oh! It’s one of ______ books I’ve ever read.

 --- Have you decided where to spend your holiday ? --- Not yet . I ______ go to Britain .

The cat is     .You should take it to an animal hospital.

 --Are you satisfied with the air today? --Not at all, it’s so foggy that I often get a cough. I think we all need much ________air to breathe.