1.—Any information about your son?
—No. If only I hadn't said(not say) those tough words to him.
2.The reference book I bought yesterday is of great significance to your history.
3.The escaped prisoner got arrested(arrest) immediately he turned up at the railway station and was sent to prison again.
4.This town dates (date) from/back to Roman times.
5.His father died, leaving (leave) him a lot of money.
6.If you have skillful (skill) English language, you can learn many things.
7.Looking (look) ahead, we are full of hope and energy.