1.b> (), , ; the tent collapsed ; the weight of the snow on the roof caused the house to collapse ;
2.b> 1) (), (i>); ( i>); ; he collapsed into his chair ;
2) (), ;
3.b> / (); , ( , ..i> i>); negotiations collapsed ;
4.b> .i> 1) (), ;
2) i> (), , ;
to collapse with laughterb> ; .