92． He is working harder than ever . What is the m____________ behind this sudden change?

91． Nothing will shake her b__________ in ghosts.

90． By now, half of the medical supplies have already been a____________ to the victims of the floods.

89．Respecting the old and taking care of the young is a t______　 in China.

88． Would you give me the s_______ of your two speeches? I have no enough

time to look through the originals.

87．The mayor received a warm r______ during his visit.

86． A large quantity of dust would a______ if we don’t sweep our classroom from time to time.