1.b> () ..i>; if you don't tell her the truth you'll regret it later , ; I really regret leaving school so young , ; she deeply regrets what she said , ;
2.b> i>.i> (), ; we regret that no tickets may be exchanged , ; we regret the error i> ; we regret any inconvenience caused to you , ; we regret to say / to inform you / that ... / , ...; it is to be regretted that ... , ...;
3.b> .i> , (, i>);
to live to regret smth.b> .