I don't know her age.How old is she?合并为一句

I don't know her age.How old is she?合并为一句 How did she come here yesterday?I don't know.(合并为一句) 一道英语题写出下列句子的同义词1.I don’t know her age .How old is she? I don I don't know和.What is it?(合并为一句) How does she end her letter?Do you know?合并为一句 How old is he? I don't know （变为同义句）I don't know ____ ____ i don't know how old she is ,but she_____ be over 40 How old are you?I want to know.(合并为一句) l donn't know.How far does she live form school合并为一句 I don't know how old he is.(改为同义句） I have__ __how old he is. I don't know how old he is 同义句转换 I don't know .What book should I buy for my son.(合并为一句)