哪个是对的?when i fail 和when i am failed

哪个是对的?when i fail 和when i am failed when I am ill,I will feel sad.when I am ill,I feel sad.哪个句子对 I failed English.同义句转换,换的是fail when i am down,和when i am feel down的意思有不同吗? when shall I PICK you UP?和when do I PICK you UP?哪个对? 哪个英语句子是对的?I‘m sorry you fail the exam again.和I‘m sorry you f I talk to him when I am in trouble(对when I am in trouble提问) I__upset when i failed in the exam. When I am blue中文意思是? "Guess who I am"和" Guess who am I "究竟哪个是对的呢? when i am gone的歌曲链接 WHO I AM WHEN I AM WITHOUT