Battery-operated slippers are used ______ seeing in the dark.
The accident happened a cold winter early morning.
---Do you know Mo Yan?---Of course. He won the 2012 Nobel Prize for Literature _________ the age of 57.
In North America, most students go to school ______ the school bus.
We often go home _________ 4:30 _________ the afternoon.
The clothes are very good . Let’s buy some .
