The expo will be held in Shanghai, _____a lot of advanced technology will be shown for the first time.
With everyone's face ________behind the mask,it's hard to tell who they really are.
I like the countryside in summer. The golden wheat fields ________as far as the eyes can see.
I invited some friends to a restaurant to dinner where each room _______with names of foreign places.
(2012年安徽卷,25)You can change your job,you can move house,but friendship is meant to be ________life.
It was a pity that the great writer died ________his work unfinished.