3 вопроса к этому предложению используя Why. where. etc I send e-mail letters to my English friend every week.

I send e-mail letters to my English friend every week.Do I send e-mail letters to my English friend every week?What do I send to my English friend every week?Whom do I send e-mail letters every week?When do I send e-mail letters to my English friend?What letters do I send to my English friend every week?Who send e-mail letters to English friend every week?What friend do I send e-mail letters every week?Do I or does he send e-mail letters to my English friend every week?Do I send e-mail letters to my English friend every week or every day?I send e-mail letters to my English friend every week, do not I?