he is the only one she is the only one who's studying french关系代词为什么用who先行词被the only修饰时不是用that吗

He is the only one [ ]is the cat?-----It's only one. The boy is my only one,he name is he is the only one she is the only one who's studying french关系代词为什么用who先行词被the only修饰时不是用that吗 He's the only one is full for heart .还有I wish you happiness forever.、 h d . I only love you no matter who he is!you are the only one in my The only one is my he is the only one of the students who is good at singing He is the only one of the students who is never late. He is the one. He is the only one against my idea.是不是就等于He against my idea. He is the only one of the family who s____ the terrible earthquake 翻译：He is the only one of the students who knows the accident. he is the only one of the students in our school who plys the piano well. he is only one year old是什么意思 It_JACK that parked the car liake that he s the only one who can drive He is the only one of the boys who enjoys playing basketball.怎样译? he is one of the America's most beloved poets