24．We have strong __________ for believing that the mine accident in Heilongjiang was due to the poor management.

Here’s my card． Let’s keep in＿＿＿＿＿．

I shouldn’t have accepted the man’s present, but I found it difficult to turn down his ______.

Smoking is one of the ______ of heart disease and it kills lots of people every year.

----What do you know the _____ of are the pig influenza in humans? ---- usually similar to regular human seasonal influenza .