单项选择题
A．He didn’t finish the exercises yesterday. B．The exercises were handed in yesterday. C．He knew the exercises should be handed in today. D．He doesn’t need to hand in the exercises today.
A．The document will cover the next two decades. B．The document will win support from the delegates. C．The document will serve as a guideline. D．The document will be completed after the conference.
A．have； interrupted B．had；interrupted C．are；interrupting D．were；interrupting