II. Complete the sentences using the missing prepositions:
1. The sink is running
2. He ran ... at once when mother cried at him.
3. Everyone should cross the street carefully, because there is always
danger to be run
4. My patience has run I'm gonna leave you forever.
5. Is it true that you ran ... when you saw Mary?
6. I forgot to turn off the tap, and the water ran ... the sink.