就在我们谈论他的时候，他突然出现在门口。

As we were talking about him, he suddenly ___materialised at the door.

他承诺的帮助最终实现了。

The help he promised finally ___materialised.

在梦境中，她的恐惧逐渐显现为一只黑色的乌鸦。

In her dream, her fears slowly ___materialised into a black raven.