YOU SAID:

What is this thing supposed to do?

INTO JAPANESE

このことは何を行うことになってますか。

BACK INTO ENGLISH

This is supposed to be doing something?

INTO JAPANESE

これは何かを行うことになってますか。

BACK INTO ENGLISH

This is something that's supposed to be done?.

INTO JAPANESE

これは、何か行われることになっているか。

BACK INTO ENGLISH

This is something supposed to be done?

INTO JAPANESE

これは何かやるべきですか?

BACK INTO ENGLISH

This is something you should do?

INTO JAPANESE

これは、何かをすべきか。

BACK INTO ENGLISH

This is something you should do.

INTO JAPANESE

これは、何かする必要があります。

BACK INTO ENGLISH

This is what you need.

INTO JAPANESE

これは必要なものです。

BACK INTO ENGLISH

This is what you need.