I don't know what to write in the letter 变成复合句

I want to write a letter in English,but I don't know ___ abo 将复合句变成简单句 I don't know when I can get the ticket to the movi 初一英语同意句转换l don't know what l should write in the letter=l do 1.l don't know what to write in the e-mail.(改为宾语从句) I really don't know what I should write to him.I really don' I don't know what to wear for the party I don't know what I I don't know what to do (改为含有宾语从句的复合句） We don't know what to do.(改为复合句) I don't write letter I didn’t know what time he __ the letter.(write) 英语选择题I was made to write a letter in English , but I don’t k I don\'t know what will happen in the