复合句改成简单句I don't know what I should do.

I don't know what I can do 是简单句还是并列句还是复合句? 将I don't know what I should do to deal with the problem 改成简单 I don't know what should I do.改成同义句.I don't know.什么.三个单词. I don't know what I should do next.(改为简单句） I don't know( ) ( I don't know what I should do next.改写成简单句 I don't know what i should do（同义句) I don't know what I should do 同义句 把复合句改成简单句：1.i don't know when i will come back.→i don't know 英语,改成同意句（1）I don't know what I should do.I don't konw＿＿（后面只有 I don't know what I should do next.(同义句转换） I don't know __ _ I don not know what i should say or do它的简单句是什么 I don't know what should I do?和I don't know what I should do