All of us found ______ difficult to work out the maths problem.

—All the volunteers were very tired, but            of them took a rest.—They were busy looking for the missing people.

Is there ______ in today’s newspaper? 

 —______ of them knows Japanese, so I have to ask a third person for help. ―You’d better ask Tom for help. He is good at Japanese.

---- Your coffee smells good!          ---- It’s from Canada. Would you like ____ ?