例句： It is possible to multiply bacteria and other living organisms in the laboratory.

例句： The children's ages range from 8 to 15.

例句： Help arrived in the person of his father.

例句： Are you sure you can come by at nine?

例句： I saw a couple of men get out.

例句： She refused to make a statement to the police in case she incriminated herself.

例句： The government has appropriated a large sum of money for building hospitals.