What should we pay more attention to if we go north in winter, Mum?—Nothing muchTake warm clothes_________ the weather is cold

_ is known to us all is that the theme ofShanghai World Expo is “Better City, Better Life”.

______ many vegetables is good for our health.

___ is believed ___ more and more people would fly to the moon in the future

This pair of jeans ________ them 300dollars.