Условие задания:

3 Б.
Read these sentences and complete them, using a verb + out. Use the suitable tenses.
1. You have to _______ the problem yourself. I can’t do it for you.
2. I phoned the station to ______ what time the train arrived.
3. We thought she was American at first, but she _______ to be Swedish.
Raymond Murphy. English Grammar in Use- Cambridge: CUP, 379p.