There is only one difference between an old man and a young one: the young one has a glorious future before him and the old one has a ______ future behind him.

单项选择题Knowing that the cruel criminal has done a lot of unlawful things, I feel sure that I have no ______ but to report him to the local police.

单项选择题In some countries preschool education in nursery schools or kindergartens ______ the 1st grade.