use the correct thense form.
They(to be) to the theatre this week.
When your friend(to return) from the south?
She(to return) yesterday.- you ( to go) to the station to meet her?-No,i(can) not.
Who you(to discuss) this question with yesterday/
you ever(to be) to the crimea? when (to be) you there?
Where you(to buy) this book?