A simple 45-minute operation __________ by scientists is hoped to cure blindness in six years.
It is reported that the US uses ________energy as the whole of Europe.
Why don’t you put the meat in the fridge? It will ______fresh for several days.
I don’t think she is a nice woman; I am her empty talk.
--- Would you mind my coming over and having a look at your new garden? My little son’s curious about those roses you grow.--- ______. You’re welcome.
Yesterday we visited a newly-built museum, around ____ some fruit shops.