Решение:
- Ron worked last Saturday. - Did Ron work last Saturday?
- Bob played chess yesterday. - Did Bob play chess yesterday?
- Anna cooked pizza last week. - Did Anna cook pizza last week?
- Andy visited a doctor two days ago. - Did Andy visit a doctor two days ago?
- Meg cleaned her flat last Sunday. - Did Meg clean her flat last Sunday?
- Tom skated yesterday. - Did Tom skate yesterday?
Ответ: Did Ron work last Saturday?; Did Bob play chess yesterday?; Did Anna cook pizza last week?; Did Andy visit a doctor two days ago?; Did Meg clean her flat last Sunday?; Did Tom skate yesterday?.