HE BEHAVED IN A VERY STRANGE WAY. THAT SURPRISED ME A LOT.A.I WAS A...

31.

He behaved in a very strange way. That surprised me a lot.

A.

I was almost not surprised by his strange behaviour.

B.

He behaved very strangely, which surprised me very much.

C.

His behaviour was a very strange thing, that surprised me most.

D.

What almost surprised me was the strange way he behaved.