到1999年底公司已完成了那个项目。

The company had completed the project by the end of 1999.

youdao

到1999年底公司已完成了那个项目。

Thee company had completed the project by the end of 1999.

youdao

到一九九年年底，他们已完成了那个项目。

They had completed the project by the end of 1999.

youdao

到一九九年年底，他们已完成了那个项目。

They had completed the project by the end of 1999.

youdao