Mr. Smith is very strict ______ everything ______ his students.[ ]

The mother with her little son ____ at my home ____ that snowy night. [ ]

Have you seen ____Audi car I parked here?—Is it _____ black one? A young man has driven it away.

When he knocked at the door, my mother was busy ____ supper.

I didn’t havemoney for a taxi, so I had to walk back home.