What _____ your mother ______— She’s a reporter.

___________is well known to us all is _________ Kobe has become one of the most popularNBA players.

We tried to stop the flames from spreading,but we knew it was ____.

You have to ____smoking. It isn’t good for your health.

You look so worried, what’s wrong -More andmore people like me begin to worry about the ______ pollution after the haze (雾霾) appeared in Beijing and some other cities in China.