The young man spends the money he makes every month ______ books.A.to buy B.for buying C.buying D.on buying这题答案是D.我想知道为什么是选D不是选C.spend的用法不是sb.spend time/money on sth./（in） doing sth么?

the young man ------- What was the young man? the young man后面是三单吗? How is the young man? 1He spends 2 hours write the letter2Thank you fot help me.3Tom is a young man and have a big dogand a small car.以上3题都有一个错误,请找出来 The young man is behind the old man. the man is young(否） what is the young man,怎么回答 I know the young man.否定句 ------How is the young man?-------________________ W____that young man in the photo? how is the young man同义句 they will never f____ the young man He finds a young man by the ( what )( he )the young man ( like ).为什么? The young girl spends a few minutes on her toilet every day. 句型转换：The young man said nothingThe young man said nothingThe young man had nothing ______ ______ The young man is wearing a blue jacket.=The young man ______ _________a blue jacket________