Prepositions of time. Part 1. (Grammar in Use .Murphy)

Jack has gone away. He'll be back ______a week.

We're having a party_____Saturday.Can you come?

I've got an interview next week. It's _____9.30 _______Tuesday morning.

Sue isn't usually here______weekends. She goes away.

The train service is very good. The trains are nearly always_____time.

It was a confusing situation. Many things were happening ____the same time.