We have been looking at houses, but haven’t found ________ we like yet.

I am so tired. I don’t want to do ________ now. 

There’s another way to survive this competition -- a way no one ever seems to tell you about, _____ you have to learn for yourself.

It's an either-or situation - we can buy a new car this year or we can go on holiday but we can’t do ______.

—Have Mike and Tina sold out all of the English storybooks?---Yes,completely.____ is left.