Mr Zhang is one of ____in our school.

下列各句中，加线的成语使用恰当的一项是 (　　)

．Now natural disasters happen one after another, ______ warns man to treat nature kindly.

It is known to us that it was such great efforts _____________ all the Chinese athletes had made _________ helped them get 51 gold medals in the 2008 Beijing Olympic Games

When there is a fire, we can ________ with a blanket.