lt's eleven o'clock.we must go to bed.变为简略句it's ( )for us ( )go to bed

lt's eleven o'clock.we must go to bed.变为简略句
it's ( )for us ( )go to bed

It's eleven o;clock for us to go to bed.

It's eleven o'clock,we have to go to bed.

It's eleven o'clock for us to go to bed

It's (time) for us (to) go to bed

eleven o'clock to

we must go to bed at eleven o'clock
time
to