completion of a topological group

例句：

1. 1.The project is expected to be completed by the end of next month.
   预计该项目将于下个月末完成。
2. 2. The work was completed successfully.
   工作成功地完成了。
3. 3. The construction of the new bridge has been completed.
   新桥梁的建设已经完成。