Complete the sentences with the correct forms of the numbers. Don't forget about articles if they are necessary.

Write one or two words in each gap.

I live on [ ] floor. (4)

Tim has got [ ] cats. (7)

My room is number [ ]. (13)

It's [ ] o'clock, so we must go to bed. (10)

Who is [ ] on the list? (18)

How many exercises are there in your homework? There are [ ]. (5)