Slaverywas______intheU.S.inthe19thcentury.
A: retailed
B: canceled
C: abolished
D: stroked
A: retailed
B: canceled
C: abolished
D: stroked
举一反三
- Under the agreement, all trade barriers between the two countries will be ______. by the end of this year. A: abolished B: canceled C: eliminated D: disposed
- All flights ______, we decided to take a train. A: were canceled B: had been canceled C: having canceled D: having been canceled
- Monday's class was ___________ because the weather was too bad. A: repeated B: treated C: canceled D: scanned
- All the fights() because of the snowstorm, we had to take the train instead. A: were canceled B: had been canceled C: having canceled D: having been canceled
- All flights _________because of the heavy fog, we had to decide to take the train. A: were canceled B: having canceled C: having been canceled D: have been canceled