YOU SAID:

The last lab assignment on May 6 was the last one

INTO JAPANESE

5月6日の最後の実験課題は最後のものだった

BACK INTO ENGLISH

The final lab assignment on May 6 was the last one.

INTO JAPANESE

5月6日の最終実験課題が最後でした。

BACK INTO ENGLISH

The final experimental assignment on May 6th was the last one.

INTO JAPANESE

5月6日の最終実験課題が最後となりました。

BACK INTO ENGLISH

The final experimental assignment on May 6th was the last one.