Come out for (someone or something)
To announce one's support for (someone or something). The mayor recently came out for legal gambling in the city.
Come into (some money)
To get possession of some money, to inherit some money. The man came into much money which he later donated to charity.
Come down to earth
To stop imagining or dreaming about things. My friend has finally come down to earth and is seriously looking for a job.
Come on!
Please, hurry, go faster. Come on, I only have a few minutes before I must go. Come on, stop doing that.
Come off
To be successful, to happen. The party came off without any problems and everyone was happy.
Come of age
To be old enough to vote or marry or sign legal contracts etc. When my classmates came of age most of them started to vote.
Cost a pretty penny
To cost a lot of money. My aunt's new coat cost a pretty penny.
Come out ahead
To improve one's situation. Although our new car was expensive, we came out ahead because it is very cheap to operate.
Come on the scene
To appear in a certain area or place. When the new DVD player came on the scene everybody wanted one.
Come on strong
To overwhelm others with a strong personality. The man came on too strong during the job interview.