3) “how delighted I am, “said he, “to meet my friends here by my own fireside!”
The correct indirect form is:
He exclaimed with joy that he was very delighted to meet his friends there by his own fireside.
Accodring to the rules,whenever there is exclamation,it should be followed by with .Secondly,how is changed into very or great depending upon intensity.Thirdly,there doesnt seem any reason to change delighted to pleasure or something else.It should be quoted in indirect as it is.