He often looks away from people when talking, and I can hardly stand______like this.

A．his to behave

B．him to behave

C．he behaving

D．his behaving

下列原始凭证中， 既可能是外来原始凭证， 也可能是自制原始凭证的是( )。

A．增值税专用发票

B．收料单

C．商品入库单

D．工资汇总表