The little girl always the windows in class. This her teacher very angry(生气的)

You must apply yourself_______ the studyyou have to take up.

I don’t think the newly directed film by Zhao Wei is as interesting as people say,

It was ______ the second-hand car that the mechanic spent the whole afternoon in the factory.

The man is David Smith. Smith is his ____ name and David is his ______name.