The dazed expression on people's faces
was caused by
(1) the blow to their heads.
(2) the heat generated by the blast.
(3) The suddenness and extent of damage
caused by the impact of the blast.
(4) the impact of broken glass and
crockery being hurled around in the
confusion
was caused by
(1) the blow to their heads.
(2) the heat generated by the blast.
(3) The suddenness and extent of damage
caused by the impact of the blast.
(4) the impact of broken glass and
crockery being hurled around in the
confusion