Question

a lot of meeting were()because of the dangerous disease

a turned off b set off c put off d taken off

Answer 1

C
put off: 推迟->句意：许多会议因为危险的疾病而被推迟了
turn off 关闭，set off 出发动身，使爆炸，take off 起飞、脱掉，都不符

Answer 2

a,翻转
b.开始着手做某事
c.推迟，拖延
d.起飞

这里应该选C
因为那危险的疾病，许多会议都被推延了。