i want to buy the hat that he wears today.有错吗

i want to buy the hat that he wears today.有错吗 选择：The hat looks great __ your coat.I want to buy one __ you the hat looks beautiful so that he wants to buy it immediate Do you want ( ) the red hat A.buy B.buys C.to buy D.take The book is so helpful that I want to buy it.that的用法?什么成分? the space that i only want to stay这句话有错嘛? He is the last one that I want to He is the last person (that) I want to see. I want to buy that kind of cloth because I ______ the cloth I want to buy that kind of cloth because I __B__ the cloth _ I want to buy that kind of cloth because i _____ the cloth _ I want to buy that kind ofcloth because I _____ the cloth __