YOU SAID:

Shouldn't you be at the testing chamber half an hour ago?

INTO JAPANESE

半時間前に検査室にいるべきじゃないの？

BACK INTO ENGLISH

Shouldn't you have been in the lab half an hour ago?

INTO JAPANESE

30分前に研究室にいた方が良かったのか？

BACK INTO ENGLISH

Should I have been in the lab 30 minutes ago?

INTO JAPANESE

30分前に研究室にいたほうがよかったのか？

BACK INTO ENGLISH

Should I have been in the lab 30 minutes ago?