With some snow on top of it,the Yellow Mountain looked fantastic this winter.Actually, I doubt whether we could visit ______mountian in China.

It is no doubt that Diaoyu Island _____ China.

The girl looked at me with a ______expression. Maybe the problem was quite _____.

These kids are quick at learning We hadbetter have them __ in a new way

How about dinner tonight It’s on me.— ______ .