Answer:
Dear Sir/Mam, I am (Your Name), student of (Class And Section). I would like to bring to your kind attention that due to (Mention your reason) I will unable to come to school for next (Number Of Days). I request you to kindly provide me with leave for (Number of days) from (start date) to (end-
Answer:
they
Explanation:
connecting word . . . . . . . . . .
Along the lines of however or for example, these are times that you are going to use an comma.