I sent my son to Qingdao last year.改为被动语态.

I sent my son to Qingdao last year.改为被动语态. I sent a letter to you last month 改为被动语态 I sent a letter to you last month.改为被动语态 My mom took this picture last year.改为被动语态 改为被动语态I sent a letter to you last month Do we use it for coo We sent many books to the Hope school last week改为被动语态 将I sent my mother three letters last month.改成被动语态 I need to repair my bike.改为被动语态 改被动语态； My mother always tells me not to trust Robert I sent The workers built the bridge last year.改为被动语态 He published the book last year.改为被动语态 把Lucy sent me a New Year Card last week 改成被动语态