1.b> 1) (), ;
2) (), / i> ; the street hums all the time / ; the room hummed with voices i> ;
2.b> 1) i> ""-i> () , . , i> ;
2) / (); to hum and ha(w) ) , ; ) , ;
3.b> 1) (), ; to hum a tune ; to hum smth. in a low tone ;
2) : to hum smb. to sleep i> ();
4.b> .i> (); , i> ; to make things hum i> ; i> / ; business started to hum ;
5.b> . i>. ! (, .. i>).