是a man of fifty还是a man about fiftyMr.Black is a man_fiftyA:in B:about C:at D:of

是a man of fifty还是a man about fiftyMr.Black is a man_fiftyA:in B:about C:at D:of Mr.Black is a man ______ fifty.A of B about Cat D in 百分之50是fifty percent还是fifty of percent 是a man还是an man he is a man about fifty.这句话对吗?ABOUT在这里用的对吗？还是可以用AT? a group of man 还是a group of men 为什么？ 是a success man 还是 a successful man a man还是an man? a man of many a man of buck-fifty是什么意思原句是that and a buck-fifty will get you cup of coffee fifty五十：音标fi中的i是读ea（A）~还是i? In her______（fifty）,she wrote a lot of books. In her (fifty ),she wrote a lot of books. In her ___(fifty),she woter a lot of books. really a man还是a really man? 请问a man of zeal还是a man's zeal,那种说法正确? 有a few of么,怎么用?五十便士为什么是“fifty pence pieces只说fifty pence 可以么为什么?还有,fifty pound coins后面有coins为什么,为了强调是硬币?