It was a nice meal, ___ a little expensive.
Not until all the fish died in the river _____ how serious the pollution was.
The Smiths have gone to New York for their holiday, with an old servant ____ their house.
I was about to go to bed _____ one of my old classmates made a call to me.
Only those ____knew well could be let in.
The criminal, as well as some ______ people, was arrested by the police yesterday.