Was Tom at the ministry yesterday? - Yes, he was. No, he was't.
Were you at holiday last month? - Yes, I was. No, I was't.
Was the text difficult? - Yes, it was. No, it was't.
Were our engineers at the exhibition last week? - Yes, they were. No, they weren't.
Were your parents at the theatre last night? - Yes, they were. No, they weren't.
Was it interesting at the party? - Yes, it was. No, it was't.
Were you late for lessons yesterday?- Yes, I was. No, I was't.
Was I impolite yesterday? - Yes, I was. No, I was't.