------Did you attend Professor Johnson’s lecture about the evolution of videos and sound devices?

------I wish I __________. I __________ a job interview with the UN.

A．had, had

B．had, was having

C．could, have had

D．could have, were having

全面结算会员期货公司为非结算会员结算，应当签订结算协议。结算协议应当包括下列（）内容。

A．保证金标准

B．结算流程

C．违约责任

D．争议处理方式