That fits the puzzle! It must be him!

这与谜底相吻合，一定是他！

youdao

Right, it must be him.

肯定是他。

youdao

From Langzhou, a man in rivers and lakes, it must be him, if we can't get this person we must root him out immediately.

廊州方向来的，江湖中人，一定是他，若是得不到此人必须立即铲除。

youdao

In the same way, evidence must be designed perfectly if it is to frame an innocent person to make him or her seem guilty.

VOA: special.2010.02.21

You use such and such frequencies, and which objects, and you hand him an apple and he'll say, "Oh, it must be very red," Right?

知道你用了多少多少频率的光,是哪些物体,然后你递给他一个苹果,他会说,哦,这是个很红的苹果吧,是这样吗

耶鲁公开课 - 死亡课程节选

If anyone should explain to the American people the truth here, it should and must be him.

FORBES: Condemning China on Currency Will Only Hurt U.S. Economy

When he first revealed that data, his retail customers told him it must be an error.

FORBES: Magazine Article

Being a lawyer yourself, you would agree that the accused must be aware of the allegations against him and evidence must be presented against him, so the accused could be able to counter it.

BBC: Exchange of letters between Thanou and IOC