1. We shall meet (Future Simple) on
Sunday. We shan't meet on Sunday.
2. I was very busy (Past Simple) on
Wednesday. I wasn't very busy on Wednesday.
3. He goes(Present Simple) to school
by bus. He doesn't go to school by bus.
4. My friend makes(Present Simple) many
mistakes. My friend doesn't make many mistakes.
5. I finished(Past Simple) school
last year. I didn't finish school last year.
6. My friend served(Past Simple) in
the Army in the Far East. My friend didn't serve in the Army in the Far East.
7. His parents work(Present Simple) at
the same factory. His parents don't work at the same factory.
8. The teacher answered(Past Simple) all
our questions. The teacher didn't answer all our questions.
9. He is fond (Present Simple) of folk
music. He isn't fond of folk music.
10. They will come (Future Simple) to see
us at the weekend. They won't come to see us at the weekend.