Mum, I was wondering if you could lend me a few dollars until I ______ on Friday.

A．get paid

B．got paid

C．have paid

D．had been paid

在进行了任何C++流的操作后，都可以用C++流的有关成员函数检测流的状态，其中用于是否进行了非法操作的函数名是( )。

A．fail

B．eof

C．bad

D．good