ootball fans attached greatimportance to the two matches, because China needed to beat Iran to ensure________ for the Asian Cup semi-finals

下列各句中，没有语病的一句是（ ）

own , _____author of The Da VinciCode，is _____very famous American writer

Scientists are convinced ___________the positive effect of laughter_________ physical andmental health.[ ]

Would you like some milk—Yes, but just .