I don't know.How old are you?合并为一句

I don't know her age.How old is she?合并为一句 How old are you?I want to know.(合并为一句) 合并英语句子.I don't know.HOW old are you?合成I don'tknow_ _ _ _.. 【合并英语句子】.I don't know.HOW old are you?合成I don'tknow_ _ _ _. i don't know how old you are i don't know how old you are其中how old you are是倒装吗? I don't know.How old are you?改为同义句 How did she come here yesterday?I don't know.(合并为一句) I don't know .What book should I buy for my son.(合并为一句) I don't know it.What was he doing last night?(合并为一句） I don't I don't know和.What is it?(合并为一句) When will they come here ? I really don't know .(合并为一句)