1.are , are discussing
2.is , is he having, no he will have his English tomorrow.
3.Do you know him ? He always tells lie
4.I came , i saw my brother was doing his homework
5.is somebody talking in the next room ?-no , nobody is talking. My son is watching TV now.
6. why didn't he go to school yesterday? -He was ill. he was staying in bed the whole day.
7.returns , has , rests .But yesterday she didn't rest ..,she was working at her report the whole evening.
8.we were taking
9.is ..., i think we shall (will ) discuss it tomorrow, when we shall (will) have more time .
10.Why didn't you put your coat on yesterday? it was cold .
11.translates , but yesterday he translated three articles
12.she didn't see me when i came into the room . she was reading at the moment.