Beyond ___stars, the astronaut saw nothing but ___ space.
| A．/…the | B．/…/ | C．the…/ | D．the…the |
Not until all the fish died in the river _____ how serious the pollution was.
| A．did the villagers realize | B．the villagers realized |
| C．the villagers did realize | D．didn't the villagers realize |
The Smiths have gone to New York for their holiday, with an old servant ____ their house.
| A．looking after | B．look after | C．having looked after | D．looked after |
I was about to go to bed _____ one of my old classmates made a call to me.
| A．that | B．as | C．while | D．when |
Only those ____knew well could be let in.
| A．who | B．which | C．what | D．he |
The criminal, as well as some ______ people, was arrested by the police yesterday.
| A．relevant | B．skilled | C．evil | D．lucky |