—Shall I sit at this end of the boat or the other end? —If you keep still, you can sit at      end.

Is _______ Qinghai-Tibet Railway plays an important role in China’s railway history the topic that you’re coming to?

We found______ impossible to finish the work on time.

— Is there _______ in today's newspaper?— Yes. A group of ________ kids joined the volunteers!

I’m for          that he’ll stay here.