27.Albert Einstein, ____ life had once been very hard , was given the Nobel Prize for physics.
It is worth considering what makes “convenience” foods so popular, and ______ better ones of your own.
Bill suggested ______ a meeting on what to do for the Shanghai Expo during the vacation.
I still remember ______ to the Famen Temple and what I saw there.
Planning so far ahead _____ no sense — so many things will have changed by next year.
—Is everyone here? —Not yet ... Look, there _____ the rest of our guests!