What does Paris's page do to warn him someone is coming to Juliet's tomb?

Answer 1

At the very beginning of Act 5 Scene 3 Paris gives specific instructions to the page as follows:

Give me thy torch, boy: hence, and stand aloof:
Yet put it out, for I would not be seen.
Under yond yew-trees lay thee all along,
Holding thine ear close to the hollow ground;
So shall no foot upon the churchyard tread,
Being loose, unfirm, with digging up of graves,
But thou shalt hear it: whistle then to me,
As signal that thou hear'st something approach.
Give me those flowers. Do as I bid thee, go.

That is a lot of instructions. They are: 1. Give me the torch 2. Go away 3. Don't stand too close 4. Put out the torch. 5. Lie down under the yew tree. 6. Put your ear to the ground and listen for footsteps. 7. Whistle if you hear someone coming. 8. Give me the flowers.

Answer 2

Keep watch. Paris tells him to literally put his ear to the ground to listen for intruders.

Answer 3

Paris's page hears a noise and sees torches approaching the tomb, signaling that someone is coming. He warns Paris by telling him to hide and stay watchful.

Answer 4

He whistles