下列句子括号里的字正确的一组是（ 　 ）

①骄傲自满是阻碍进步的（ ）脚石。

②这首歌流露出了（ ）落阶段的思想感情。

③我们的张厂长和工人之间的关系非常融（ ）

④会计马上在单据上盖上了“现金收（ ）”的印章。

A．绊没洽讫

B．拌末洽迄

C．拌没恰讫

D．绊末恰迄

I don't know____ makes her afraid of having her business discussed. [ ]

A. what it is about Mary that

B. that is it about Mary that

C. what is it about Mary that

D. that it is about Mary that