我只是笑了笑，试图不把它当回事。

I just laughed and tried to ___make ___light ___of it.

他们展现出乐观的形象，并对生活中的麻烦不以为意。

They project an optimistic image and ___make ___light ___of the troubles in life.

尽管后果严重，他继续对这种情况不以为然。

Despite the serious consequences, he continued to ___make ___light ___of the situation.