It doesn’t matter to me____ I miss my train, because there’s another one later

I’mnothungrybecauseIhave_______hadlunch.

_ what wouldhappen, none of them could find a way out.

下列句子中，加点的成语使用恰当的一句是（ ）

As a result of destroying theforests, large ____ of desert ____ covered the land.