1．I blamed George for the failure of the talks.
2．The town fell into a decline after the mine closed.
3．Personal characteristics(特征)，such as age and sex are taken into account.
4．The case has generated(产生) enormous publicity in Brazil.
5．Studies suggest that life originated only once，from a single ancestor.
6．He suspected that the woman staying in the flat above was using heroin.
7．The interviews were given to a random sample(样本) of students.
8．The time we spent together is now a distant memory.
