YOU SAID:

What could he have been thinking of? It must have been a trick of the light.

INTO JAPANESE

彼は何を考えていたのでしょうか？それは光のトリックだったに違いない。

BACK INTO ENGLISH

what was he thinking? It must have been a trick of the light.

INTO JAPANESE

彼は何を考えていましたか？それは光のトリックだったに違いない。

BACK INTO ENGLISH

what was he thinking? It must have been a trick of the light.