1.b> 1) (.i> up) ();
2) (); this dress buttons down the back ; my collar won't button ;
2.b> (), ;
to buttonb> upb> 1) (); button up your overcoat ; to button up one's mouth / ; to button up one's purse , ;
2) .i> i> ();
3) .i> () i>;
4) .i> ();
5) ();
6) .i> i> ().