例句： It's dangerous to go there alone.

例句： He confessed himself( to be) totally ignorant of their plans.

例句： They were supposed to be here an hour ago.

例句： I find a couple of socks in the bedroom, but they don't make a pair.

例句：

例句： a veteran of political campaigns.

例句： You are so bold that you never do something on second thought.

例句： Usury is interest in excess of a legal rate.

例句： She is the most progressive writer of those times.

例句： An orchestra usually plays classical music.