A prisoner escaped from the work camp last night. It was about ten hours ________the guards discovered what had happened.
A: when
B: since
C: until
D: before
A: when
B: since
C: until
D: before
举一反三
- A man escaped from the prison last night. It was a long time( ) the guards discovered what had happened.
- What ________last night? A: happened to you B: did you happen C: you happened D: had happened to
- He didn't go to bed until it was 12 o'clock last night A: before B: since C: until D: as
- I finished my homework until ten last night.（)
- His family_____TV from ten to twelve last night . A: watched B: were watching C: had watched D: was watching