what has happened in the last season of Grey's Anatomy? When is the next season begining on CTV?

Answer 1

Meredith slept with her vetrenarian and her roommate
The blonde got involved with and killed a patient.
The roommate got involved with an overweight ER doctor who sleeps at the hospital.
McDreamy is now sleeping tih his wife and wants Meredith back.
The roommate spent some time with the Sandra Oh and her Boyfriend until she came out naked to get him thrown out.
And Meredith met her father and his new family.