His house burnt down in a big fireWas the base on which it had stood

We can never expect ________ bluer sky unless we create________ less polluted world.

I served drinks in a bar last summer. I find ______ a real battle being on my feet all the time like that.

It is reported that a new racing car made from vegetables and powered by chocolate ______in May, 2009.[ ]

Do you know the man ___ just now