It is reputed that he accepted the bribe.
彼はわいろを受け取ったという評判だ
It is right (by law) that ....
…は法に照らして正しい
It is right up his alley.
彼にはそんなのお手のものだ
It is rude to speak with your mouth full.
口をいっぱいにして話すのは行儀が悪い
It is sad that ....
…は残念だ
It is sheer madness to drive so fast.
そんなにスピードを出すのはまったく愚かなことだ
It is significant that ...
…ということは重要だ
It is silly of you [You are silly] to accept his invitation.
彼の招待を受けるなんていかれてるぞ
It is six of one and half a dozen of the other.
両者とも大差ない，五十歩百歩である
It is [seems] so.
そのとおり［そうらしい］
