I promise I will finish my homework before dinner.（我保证我会在晚饭前完成作业。）

She promised to come to my party next week.（她答应下周来参加我的派对。）

He promised his mother that he would be home early.（他向妈妈保证会早点回家。）

They promised to help each other with the project.（他们承诺在这个项目上互相帮助。）

The company promised to improve the quality of its products.（公司承诺提高产品质量。）

I promise not to tell anyone your secret.（我保证不把你的秘密告诉任何人。）

My father promised to buy me a new bike if I get good grades.（我爸爸答应如果我取得好成绩就给我买一辆新自行车。）

She promised to take care of my pet while I'm away.（她答应在我离开的时候照顾我的宠物。）

We promised to protect the environment and make it cleaner.（我们承诺保护环境，让它更清洁。）

The teacher promised to give us more interesting lessons.（老师承诺给我们上更有趣的课。）

He promised to visit his grandparents this weekend.（他答应这个周末去看望他的祖父母。）

They promised to support the local community.（他们承诺支持当地社区。）

I promise to practice English every day to improve my skills.（我保证每天练习英语以提高我的技能。）

My friend promised to go shopping with me tomorrow.（我的朋友答应明天和我一起去购物。）

The government promised to build more schools in the area.（政府承诺在这个地区建造更多的学校。）

She promised to return the book to the library on time.（她答应按时把书还给图书馆。）

He promised to be more responsible in his work.（他承诺在工作中更有责任心。）

We promised to attend the meeting on time without being late.（我们承诺准时参加会议，不迟到。）

The athlete promised to do his best in the competition.（这位运动员承诺在比赛中尽他最大的努力。）

My sister promised to teach me how to play the piano.（我姐姐答应教我弹钢琴。）