I’m very upset and don’t know （）A what to do B how to do

I'm very upset i'm very upset and don't know what to I'm very upset ,Sometimes ...... I'm very upset on that day 把单词拼成句子,I’M don’t and to upset do what know very I'm very upset and don;t know what ( )[do].为什么? what to do在i‘m very upset and don't know what to do中做什么成分、 【急】 I’m very upset and don’t know （）A what to do B how to do I had just lost $50 and I felt very upset.这句话能不能改成 I had just lost $50 and I feel very upset. I had just lost $50 and I felt very upset.后面那个I可以省略不? I had just lost 50$and I felt very upset.这句话是什么时态 英语~一句话的理解I'm very upset and don't know what to do.________what to do为什么可以这样用-----------------还有这种用法吗?---------- l ’m very upset and don't know what to do . I am very upset and don not know what to do.Can you tell me? If failed my English exam and I was very upset.这句话怎么这么别扭? I failed my test.I am very upset and don't know whatshould i I failed my test.I am very upset and don't know how to do或don't know what to do ____ in my class was invited ___ me,so I'm very upset.A.Everyone else,except____ in my class was invited ___ me,so I'm very upset.A.Everyone else,except B.All the students,except C.Everyone else,besides D.Everyone,besides He came into the classroom ( ) A very upset B being upset c to upset D to be upset