I am sad because i ( )the math test.A.am failing B.failed ,选择哪个I am sad because i ( )the math test.A.am failing B.failed ,选择哪个,这是个什么类型的句子,类似这些句子时态应该怎样填?

I am very sad,because I have lost i am very sad I am so sad If I am gone,who could not breathe because I am sad to.. math I because I the sad failed test am 连词成句 Today,I am very sad! now i am very sad I feel sad because I failed the 英语翻译I am me,only my own,not for any person sad sad,because I know how to cherish me.Don't make me sad, Because I am happy. because.i.am. Because I am in I am because you I am sad because my mother is ill.的句型转换 I am sad because I failed the math test对画线部分提问 .我会及时采纳的 额 because of you,i am serious,i changed,i tried,i sad too.last,i will leave hope you happy.求 Do you know?I am sad!very sad! I am very sad,we end very