In order to attract more customers, many supermarkets usually sell their goods at a good________ at weekends.
The Space Shuttle Columbia broke into pieces over Texas as it returned to the earth on February 1,2003,__________all seven astronauts aboard.
—Tom enjoys__________basketball on Sunday afternoons,doesn’t he?—Yes,he does.But what his sister enjoys__________.
__________from the appearance,it is very peaceful;but in fact,a war will break out soon.
Nathalie suggested the problem worth paying attention__________at the meeting.
The little boy still needs the __________20 dollars to do with some things __________.