Вопросы идут в том порядке, как просишь:
1) Were the Olympics held during the months of July or August?
What months were the Olympics held during?
The Olympics were held during the months of July or August, weren't they?
Were the Olympics or Formula One held during the months of July or August?
2) Did the athletes present themselves one month before the games at Elis?
When did the athletes present themselves at Elis?
The athletes presented themselves one month before the games at Elit, didn't they?
The athletes or tennis players pesented themselves one month before the games at Elit?
3) Did the victors enjoy great honour on returning to their cities?
What did the victors enjoy on returning to their cities?
On returning to their cities the victors enjoyed great honour, didn't they?
Did the victors enjoy great honour or feel embarrassed on returning to their cities? (to feel embarrass чувствовать смущение)