It is somethings that

[Davy07]

I am not familiar with this kind of sentence.
it is strains that will keep John Terry and Ashley Cole out of the World Cup qualifying match against Belarus in Minsk tomorrow. (from Times Online)

It is +any nouns that?

[Mister Micawber]

.
Yes, a common (if often awkward) formation.

It is sushi that I like best.
It was Harold who lost the war.
.
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Native English teacher at Mister Micawber's