It's just what I wanted.
ちょうどこれが欲しかった
It's kind of you to invite us.
お招きありがとうございます
It's late and I must fly.
((略式))遅いから急いで帰らなくちゃ
It's late.
夜がふけた
It's mattering less and less.
それは問題にならなくなっている(◆lessが続く場合は進行形可)
It's missing two screws.
ねじが2本足りない
It's more than my job's worth.
((英略式))そんなことをしたらくびになってしまう
It's my round.
私が払う番だ
It's my shout.
俺のおごる番だ(◆パブ・バーなどで)
It's natural for mothers to love and protect their own babies.
母親が自分の赤ちゃんを愛し守ることは自然なことだ