This pair of shoes ________ one of the _________ very well.

Have you seen______ pen? I left one here this morning.— Is it___________ black one? I think I saw it somewhere.

It is believed that travelling to Yangzhou in ________ March is ________ enjoyable experience.

Is your iPad black, Mary?–No, it isn’t. ______________ is white.

This is not___ watch. I think it’s ___watch.