"it's time we go" vs. it's time we went

[Soklong]

Hi teachers!!

Could you please tell me what the differences between the following sentences:

1, It's time we go.
2, It's time we went.
3, It's time we were going.

Thanks!

Soklong

[Mister Micawber]

.
I'd say that you have listed them in order of increasing tentativeness or politeness.
.
_________________
Native English teacher at Mister Micawber's

[Alan]

Hi soklong,

You asked for differences in the following:

[Tom]