_________several times, but Mary still has no idea of how to do it properly. 

In my opinion , Tianjin is not as expensive in price as Beijing but Tianjin is       in traffic.

－I wonder if she will show up at the concert.－She will.She is only too ______ to watch the famous director.

Wolves are very ______: they can live in forests, on open plains, or in the snows of the Arctic.

There was a __________look on her face because a________ problem _________the little girl.