You do study so hard dearie, you will give yourself a headache

“You do study so hard dearie, you will give yourself a headache. Why don’t you take a nice walk by the river for half an hour, and come back nice and fresh.”
(a) Which word in the extract is opposite to ‘go’?
(b) Who is studying hard?
© What suggestion does the speaker make?

(a) The word is ‘come’.
(b) Harold is studying hard.
© She suggests that he should take a nice walk by the river.