The group of students is discussing a difficult math problem in the classroom.（这群学生正在教室里讨论一道难题。）

Our group decided to go on a picnic by the lake this weekend.（我们小组决定这个周末去湖边野餐。）

The research group has made significant progress in their project recently.（这个研究小组最近在他们的项目上取得了重大进展。）

A group of tourists are taking pictures in front of the famous monument.（一群游客正在这座著名的纪念碑前拍照。）

The music group will perform at the school concert next week.（这个音乐团体下周将在学校音乐会上表演。）

She joined an art group to improve her painting skills.（她加入了一个艺术小组来提高她的绘画技巧。）

The work group is responsible for finishing this important task on time.（这个工作小组负责按时完成这项重要任务。）

There is a group of birds singing in the tree outside my window.（有一群鸟在我窗外的树上唱歌。）

The investment group is considering several new business opportunities.（这个投资集团正在考虑几个新的商业机会。）

Our group leader is very organized and always keeps us on track.（我们的组长很有条理，总是让我们按计划行事。）

A group of volunteers are cleaning up the park to make it more beautiful.（一群志愿者正在清理公园，让它变得更美丽。）

The dance group practiced hard every day for the upcoming competition.（这个舞蹈团为了即将到来的比赛每天都刻苦训练。）

The study group meets regularly to review what they've learned.（这个学习小组定期聚会复习他们所学的知识。）

The group of workers are building a new bridge across the river.（这群工人正在河上建造一座新桥。）

This environmental protection group is trying to raise awareness about climate change.（这个环保组织正在努力提高人们对气候变化的认识。）

The drama group put on an amazing play last night.（这个戏剧小组昨晚上演了一场精彩的戏剧。）

A group of friends gathered at the coffee shop to catch up.（一群朋友聚集在咖啡店叙旧。）

The marketing group came up with some creative ideas for the new product.（这个营销团队为新产品想出了一些有创意的点子。）

The hiking group explored the deep forest and discovered many beautiful sights.（这个徒步旅行团探索了这片深林，发现了许多美丽的景色。）

The group of scientists are conducting experiments to find a cure for the disease.（这群科学家正在进行实验以找到治疗这种疾病的方法。）