~Mom , hurry up! Did is on TV!
~OK,I'm coming.
(Kangkang’ father ,Dr.Li,is talking with a journalist on TV.)
~May I ask you some questions,Dr. Li?
~Sure,go ahead.
~The flu is sperading quickly among people these days.So what shpuld we do to preven it?
~Well,first,we should exercise often to bulid up our bodies.Second,we should keep our rooms clean and the air fresh all the time . Third,we better not go to crowded places.
~Must we go to see a doctor at once when we have the flu?
~Yes , we must.
~Thank you .We’ll take your advice.