After the project, the engineers immediately started a new one
A: completed
B: has completed
C: had been completed
D: has been completed
A: completed
B: has completed
C: had been completed
D: has been completed
举一反三
- The house ______ five months ago. A: has completed B: completed C: was completed D: has been completed
- The task ___ by the time you come back. A: has been completed B: will have been completed C: will complete D: has completed
- The mayor of Beijing says that all construction work for the Beijing Olympics_________ by 2006. A: has been completed B: has completed C: will have been completed D: will have completed
- All the tasks _______________ahead of time, they decided to go on holiday for a week. A: been completed B: having been completed C: have completed D: had been completed
- The new library building ___ last week. A: was completed B: is completed C: completed D: has completed