---- Where will you start your work after graduation, in the south or in the north? ---- Mm, it’s not been decided yet. I _____ continue my study for a higher degree.

_____ to do the work, I should do it some other day.   

If it      the climate, I would stay here much longer．

They demanded that the books ______ to the school library right away.  

---I didn’t go to the party yesterday because my car broke down.  ---You ______ mine. I wasn’t using it.