---Is this the first time you ______ Xi’an? --- No. But ______ here, the city wasn’t so modern.
The speaker raised his voice but still couldn’t make himself ______.
You ____ television.Why not do something more active?
She is my best teacher ______ help I have made great progress.
E-mail, as well as telephones, ___ an important part in daily communication.
In order to make our city green, _________.