Ответ:
- Mike was in town yesterday. Mike wasn’t in town yesterday.
- We were abroad last year. We weren’t abroad last year.
- Your sister was in the swimming pool yesterday. Your sister wasn’t in the swimming pool yesterday.
- The children were at summer camp last August. The children weren’t at summer camp last August.
- Our favourite lesson was Art last year. Our favourite lesson wasn’t Art last year.
- You were in the country last Saturday. You weren’t in the country last Saturday.
- Her parents were busy yesterday. Her parents weren’t busy yesterday.
- Their teacher was in the gym last PE lesson. Their teacher wasn’t in the gym last PE lesson.
Was употребляется с I/he/she/it, were — с you/we/they.
