YOU SAID:

The Professor was my teacher. He let them into the castle.

INTO JAPANESE

教授は私の先生でした。彼は彼らを城に入れました。

BACK INTO ENGLISH

The professor was my teacher. He put them in the castle.

INTO JAPANESE

教授は私の先生でした。彼はそれらを城に置きました。

BACK INTO ENGLISH

The professor was my teacher. He put them in the castle.