Question

Pick out modal and state its function

You must remember do's and don't while executing the plan

Answer 1

There are ten types of modal verbs: can, could, may, might, will, would, shall, should, must, ought to. Can (or cannot/can't) shows ability, in the sense of knowing how or being able to do something. In informal situations, it expresses permission, in the sense of being allowed to do something.

Answer 2

Answer:

Must’ here is the auxiliary model because it is stating a duty like you must do this thing.