1．He had not realized the depth (深度) of their feelings for each other.
2．A dog rushed out of its house and scared (惊吓) me.
3．Each of the components (成分) in the units is useful in its degree.
4．After you accomplished (完成) the task, you can have a long holiday.
5．Are you sure you are physically tough (强壮的) enough for this job?
