我们昨晚去听了一场流行音乐会，乐队表演得很棒。

We went to a pop ___concert last night and the band performed amazingly.

老师和家长共同努力，协调一致地帮助孩子成长。

Teachers and parents work in ___concert to help children grow.

两个团队协同努力完成了这个项目。

The two teams ___concerted their efforts to complete the project.