Several people walking across the street .
They are going to lunch together .
Several people walking across the street.
They are going to lunch together.
To me let's go to lunch feels more formal and implies that the food is prepared and ... My colleagues and I would usually go to lunch together. They are going to lunch together.
To me let 's go to lunch feels more formal and implies that the food is prepared and ... My colleagues and I would usually go to lunch together . They are going to lunch together .