How old is he?He is ( ) eleven,I think.Oh,it is ( ) to ( ) ( ) our classroom 填入所缺词

(How old is he/she? How old is he/she? how old is he?he is nine.中文how old is he?he is nine.中文翻译. how old is she/he?怎么回答? How'old-is·-He/she? how old is he答句 how old is he?复数是什么 How old is he?改为同义句 写同义句:How old is he? How old is he的同义句 How old is he 改为同义句 how old is he?的同义句 How old is Jack?I think_____(he is)12.填空 how old is he?等于什么what is 什么? How.old.is.your.father?He.is一一求填空 How old is he how old在句中做什么成分啊?how old相当于形容词么？ He is old (young). 情问：I don't know --------怎么填?（A.he is how old B.is he how old C.how old is he D.how old he is)能说一下相应的语法知识,并举一个例子吗?