--- Where are the students ? How could they keep us waiting for so long? --- They started an hour ago and they____ be here in fifteen minutes, I think.
Shelly had worked hard for her biology examination so that she could be sure of passing it at her first .
Shortly after the accident,two police were sent to the spot to keep order.
At a rough estimate,Nigeria is Great Britain.
There be any difficulty about winning the speech contest now that you’re well prepared for it.
I can hear the Browns' phone bell ringing but no one is answering it; they _______ be at home.