They hurried to the train station, _____ it was too lateThey had to wait another ten minutes[ ]

There are six floors ______our school building. Our class is ______ the third floor.

Can I help you, sir— Yes. I don’t like the coat. Would you like to show me ____ one

.“ Look at him! He behaved ________ nothinghad happened”, said Mary.

They ______ a small laboratory and devoted every spare moment to this work.