Were they discussing this question yesterday at 5 o'clock?Was he listening to the radio at 7 o'clock yesterday?Is she walking to the students club?Will our .... be speaking to our dean tomorrow at this time?Is the students’ hockey team playing hockey?Are we making a physical experiment now?They weren’t discussing this question yesterday at 5 o'clock. He wasn’t listening to the radio at 7 o'clock yesterday.She isn’t walking to the students ciub.Our ... won’ t be speaking to our dean tomorrow at this time.The students’ hockey team isn’t playing hockey.We aren’t making a physical experiment now.